Flight Test Plan

Daniel Dempsey

Zenith Zodiac CH601XLB

December 5, 2013


 

Airport Selection. 4

In Flight Emergency Plan. 4

Out of Rig Conditions. 4

Engine Outage During Climb Out 5

Canopy Open During Flight 5

Flutter 5

Ground Emergency Plan. 5

Equipping the Plane. 5

Pre Test Conditions. 5

Pilot 6

Equipment 7

Ground Crew.. 7

Taxi Tests. 8

1. The first taxi test 8

2. The second taxi test 9

3. The third taxi test 9

4. The forth taxi 9

5. The fifth taxi 10

6. The sixth taxi test 10

7. This taxi test 10

8. Aborted takeoff high speed taxi test 10

1. First Flight 12

Preflight Conditions. 12

Take Off and Climb Out 12

Level Flight 12

Descent 13

Post First Flight 14

2. Second Flight 17

3. Third Flight 18

Run Up. 18

Climb Out 18

Level Flight 18

Descent 19

Post Flight Evaluation. 19

4. Forth Flight 20

Compass and Airspeed Indicator 20

Vertical Speed and LRI 21

Post Flight Evaluation. 21

5. Fifth Flight 23

Finding Best Climb Speed Vy. 23

Finding Best Climb Angle Vx. 24

Post Flight Evaluation. 24

6. Sixth Flight 26

Power On Clean Stalls. 26

Power On Dirty Stalls. 26

Power Off Clean Stalls. 27

Power Off Dirty Stall 27

Post Flight Evaluation. 27

7. Seventh Flight 29

Test for Static Longitudinal Stability. 29

Test for Dynamic Longitudinal Stability. 30

Test for Lateral Directional Stability. 31

Spiral Stability Test 32

8. Eighth Flight 33

9. Ninth Flight 34

10. Tenth Flight 34

11. Eleventh Flight 34

12. Twelfth Flight Test 34

13. Thirteenth Flight 35

Post flight 35

Remainder 35

Conclusion. 35


 

 

Airport Selection

Louisa County Airport will be used.

This airport provides an excellent 4000-foot long by 100 foot wide paved runway, in a low population area with low air traffic. 

It is at low altitude of only 400 feet above MSL.

It is the current home airport for the plane in question, which is stored in hanger 22.

The airport has an active Unicom at frequency 122.72 and weather on 118.425 from a nearby airfield CHO (Charlottesville).

There are several other nearby airfields including Lake Anna K7W4, Orange County COG, Gordonsville GVE.

Beside the airports, the part of rural Virginia that surrounds the town of Louisa is dominated by farmer’s fields.

 

In Flight Emergency Plan

Emergency Flight Procedures are detailed in the Owners Manual.

The pilot will memorize the emergency procedures.

The first 3 flights will stay within easy glide distance back to the airport. 

If an engine outage occurs the plane with be landed back on the runway.

Beside the kinds of emergencies that can be expected with a plane that has already reached an airworthy condition, special cases must be planned for that could be encountered during the flight test phase.

 

These include:

            Severe out of rig conditions

            Engine outage during climb out.

            Canopy open during flight

            Flutter

 

Out of Rig Conditions

First the weight and balance will be checked prior to flight and determined to be in a safe CG range.

High speed taxi tests will be used to attempt to identify this condition before flight.

As the aircraft approaches lift off speed the control surfaces will begin to have authority.

Up to 10 high speed taxi runs will be conducted.  At 55 MPH the ailerons, elevator and rudder will be tested.  The elevator should able to lift the nose wheel off the ground at that speed.  This will show that there is enough pitch authority.  Gradually releasing back pressure should put the nose back on the ground.   With the nose wheel off of the ground the plane should still be steerable with the rudder.  Releasing rudder peddle pressure should cause the rudder to center itself and the plane to taxi in a straight line.   Note: with the weight on the front wheel most of the steering will be from the steerable front wheel. 

With the plane near the take off speed some amount of roll in either direction should be achieved using ailerons.

A ground emergency crew will be on hand during these fast taxi tests.

In flight the rigging will be checked in the following test.

The aircraft will be flown to 3000 feet of altitude.

The aircraft will be flown at a cruise speed of 100 knots after completing the climb to altitude.  Roll and Pitch trim will be centered. 

Before the next flight the controls should be adjusted as to not require trim.

In the case of extreme out of trim that is not removable with the trim adjustments the plane should be returned to the airfield immediately so as not to exhaust the pilot.

Engine Outage During Climb Out

In the case of engine outage during climb out the first thing the pilot should do is lower the nose to maintain air speed.  Second determine if the airplane has the minimum of 800 feet necessary to turn around to land on the runway.  If less than 800 feet pick a place straight ahead to attempt an emergency off field landing.

Canopy Open During Flight

Canopy should be double checked for being securely latched before each flight.  Do not try to close the canopy.  Maintain speed and return to the airport. 

Flutter

Proper cable tension and aileron mass balance are meant to guard against flutter.   If during any flight the pilot experiences or suspects flutter quickly lower speed, then return the airport immediately.  A thorough inspection should be performed.  Any flutter occurrence can badly damage the airplane.

Ground Emergency Plan

A ground crew of 1 or 2 shall be used on initial flights.  The ground crew shall be equipped with a fire extinguisher.  The ground crew shall film take off and landings with a video camera.  The ground crew will be equipped with leather gloves, and a crow bar in order to help remove the pilot from the plane in case of a crash.

 

Equipping the Plane

 

 

 

Pre Test Conditions

The plane must be thoroughly examined and found in flight worthy condition before conducting these tests.

Check the condition of the following:

Altimeter (provide a small vacuum at the static port)________________

Vertical Speed _____________________________

AIS ______________________________________

Tachometer________________________________

LRI_______________________________________

Radio & head sets___________________________

GPS______________________________________

Fuel Gauge ________________________________

Fuel Pressure Gauge _________________________

Mixture ___________________________________

Volt Meter _________________________________

Oil Pressure ________________________________

Oil Temperature ____________________________

CHT ______________________________________

Panel Lights ________________________________

Landing and Taxi Lights ______________________

Nav Lights _________________________________

Strobe Lights _______________________________

Controls (Free Movement)_____________________

Tire Pressure _______________________________

Wheel Pants secure __________________________

Front Gear _________________________________

Main Gear _________________________________

Canopy ___________________________________

Spinner ___________________________________

Propeller Condition__________________________

Propeller Tracking___________________________

Electrical System____________________________

Exhaust ___________________________________

Control Surfaces ____________________________

Hinge Pins_________________________________

Fuel Clean at strainers________________________

Safety Belts________________________________

Cowling Latches____________________________

Access Panels ______________________________

Weight and Balance Check____________________

 

Pilot

Should be thoroughly familiar with flight operations, especially emergency procedures.

Should be well rested.

Should be well trained.

Should not have consumed intoxicants within 24 hours of the test.

Should be in good health.

 

Clothing

Only cotton or other flame resistant clothing shall be worn.  No synthetic fibers will be worn.

 

During the first flight and high speed taxi tests a motorcycle helmet shall be worn.

 

Leather shoes shall be worn.

 

Cotton gloves shall be worn.

 

Equipment

A fire extinguisher shall be conveniently located and held down with a Velcro strap.

 

A rock hammer shall be conveniently located to break the canopy bubble in case of a crash where the plane lands upside down.

 

A video camera will be used to record the flight.

 

A box of extra fuses will be velcroed next to the fuse box.

 

A tape or other voice recorder will be plugged into the intercom system to record the pilots voice.

 

Check Lists for walk arounds and flight phases will be readily available in the cabin.

 

Draft of the Flight manual will be in the cabin.

 

Ground Crew

For taxi and the first 3 flight tests a ground crew should be standing by.  The ground crew shall have a crow bar and fire extinguisher.  The ground crew shall record these tests with a video camera.  The ground crew shall use a hand held radio tuned to the Louisa frequency to listen to the pilot.  The ground crew shall have a large red flag to signal trouble if they suspect a problem.   Possible problems they might see first are:

Leaking fuel, low tire, deer near the runway.


 

Taxi Tests

Weather must be clear on the ground with visibility of 4000 feet or better, and very little cross wind, less than 5 knots.  The runway should be dry.

In each test if the plane does not meet the expected performance, stop and correct the problem before continuing.

The plane will be fueled with 6 gallons of fuel in the left and right main tanks and the auxiliary tanks shall be empty.

Before each test announce to Louisa traffic that you are taking the active runway for a taxi test.  Check for and give way to other traffic.

“Louisa Traffic, experimental 978ER taking position on runway 9 for taxi test, Louisa Traffic”.  The runway will be either runway 9 or 27 depending on if the prevailing wind is from the east or west.

 

1. The first taxi test

 This will be to check ground steering and compass check.

 

With the plane lined up with runway 27 record the heading from the compass, the EFIS and the GPS.

Heading should be 270.

Vertical Card Compass ______

EFIS ______

GPS ______ (note the GPS may only give headings while underway)

The speed will be gradually increased from the start of the runway to midpoint.  The plane should kept in the center of the runway.  Aim for 30 knots by the midpoint of the runway.

Apply even braking to slow the plane down to 10 knots before turning off at the next taxiway. 

Was the plane Steerable? ______________

Now take position on runway 9. 

Record the headings.

Heading Should be 90.

Vertical Card Compass ______

EFIS ______

Run the speed up to 20 knots the slow to exit at the next taxiway.

Take the plane to the ramp area.

With the plane lined up 90 degrees from the direction of the runway.  Record the headings.

Heading 180

Vertical Card Compass ______

EFIS ______

Reverse the direction of the plane and record the headings again.

Heading should be 0.

Vertical Card Compass ______

EFIS ______

With the plane oriented 45 degrees from the runway record the headings

Heading should be 45.

Vertical Card Compass ______

EFIS ______

Reverse the direction and record the headings again.

Heading should be 225.

Vertical Card Compass ______

EFIS ______

Now turn the airplane 90 degrees and record the headings.

Heading should be 135.

Vertical Card Compass ______

EFIS ______

Now reverse the direction of the airplane and record the headings.

Heading should be 315.

Vertical Card Compass ______

EFIS ______

Use the known heading of the Louisa Runway to create a deviation tag that has the differences in the known headings and the recorded ones.

2. The second taxi test

This will be to check brakes.

The speed will be gradually increased to 45 knots.  Maintain 45 knots until 500 feet to a taxiway.  Pull back the throttle and apply brakes with more force than on the first test.  You should be able to bring the plane to a stop within half the remaining 500 feet.

 

Was the plane controllable using brakes? ____________

Did the plane require less than 500 feet to stop? __________

 

3. The third taxi test

This test that the airspeed indicator is reasonably accurate.

Mount a video camera in the plane.  Make sure it can see 3 sources of speed. The AIS (which is being checked), the Dynon EFIS, and the Garmin GPS.  Each GPS and the EFIS has been set to display speeds in knots.

The speed will be gradually increased to 45 knots.  Maintain 45 knots until there is less than 1000 feet of remaining runway. 

Once the information is recorded throttle back and exit the runway.

 

 

4. The forth taxi

This test will be to check power.

The plane will throttle smoothly but all the way to the firewall in about 3 seconds.  The plane should reach take off speed of 50 knots in 1000 feet.  Just before reaching 50 knots back off on the throttle.  Use brakes and steering to take the next taxiway.  

Were you able to accelerate the plane to 50 knots in less than 1000 feet. ____________

 

5. The fifth taxi

This test is check elevator and rudder rigging.

The plane will be throttled up to 50 knots and kept there by throttling back an appropriate amount.  At 50 knots the pilot should be able to left the nose gear off of the pavement by pulling back gradually, carefully on the stick.  Be prepared to start steering with the rudder as the nose wheel come up.  While the nose wheel is off of the ground check that you can control the airplanes direction with the rudder.  Gradually let the nose back down, then throttle back to 15 knots and taxi back.  Be prepared to about the test when less than 500 feet remain.

Were you able to lift the nose wheel?  _____

Were you able to steer with the rudder when the nose wheel was off of the ground?  ____

 

6. The sixth taxi test

 This is to test aileron rigging.

Start out the same was as taxi test 4.  Get the plane to 50 knots.  Apply enough left aileron that the planes right wheel just comes off of the round.  Carefully let the pressure off of the stick to put level the plane again.  Now gradually lift the left wheel off of the ground by applying right aileron.  Again carefully level the aircraft and throttle back to depart the runway. 

Was roll controllable left and right?________ 

Was the amount of pressure near equal to lift the left and right wheels?_________

 

7. This taxi test

This is to test the flaps.

Bring the plane up 50 knots, then apply one notch of flaps.  When applying the second notch of flaps be prepared for the flap handle to want to move forward and down when your release the thumb button.  Keep some back pressure on it as you release it.  Once you’ve got the second notch of flaps engaged go to the third and final notch.  Again be prepared for the stick to want to go forward by applying back pressure as you release it.

Once the flaps are all the way in, throttle back, and raise the flaps and taxi off.

Were the flaps controllable? __________

Did the airplane continue to steer correctly with flaps engaged? ___________

Any other issues? ____________

How much force was required? Between 1 and 5 with 1 being almost none and 5 being too much. ___________ Force.

 

8. Aborted takeoff high speed taxi test

The beginning roll will be the same as if the plane were going to be flown.  Bring the airplane up to 50 knots.  Try to note the place on the runway where that the plane reaches that speed.  At a marker apply hard brakes to a complete stop.  Be careful to keep the plane in the center of the runway as brakes are applied.  Measure the distance required to stop the plane.

Distance Required to Stop______________

Inadvertent Flight

During the high speed taxi tests inadvertent flight may occur.  Be prepared for this event and immediately throttle back.  Use back pressure on the stick to bring the nose up a little and as soon as the gear touch down be prepare to apply more back pressure to keep the plane from pitching hard forward.  Be prepared for a change in direction as the plane goes from rudder steering to nose wheel steering.  Use good cross wind methods of roll into the wind and opposite rudder to control the airplane.

 

All issues uncovered during the taxi tests must be corrected before the first flight.  Record in the maintenance logbook any changes that are made.  If changes are made repeat the taxi test that uncovered the issue before proceeding.

Have issues been corrected? _____________


 

1. First Flight

Preflight Conditions

Weather must be VFR and cross winds less than 5 knots.

Record the weather conditions.

Ambient Temp _______ Relative Humidity _________ Barometric Pressure ______

Takeoff fuel will be 6 gallons in the left main, 6 gallons right main and both auxiliary tanks shall be empty.

The plane will be thoroughly preflight checked, including tire pressure and oil level, brakes and rigging.

A go no-go marker will be used 1500 feet from the beginning of the runway.

The GPS will be preset to have Louisa as the destination airport.

Tune to the Louisa CTAF frequency of 122.725 on the radio.

The flight should last about a half an hour to 45 minutes.

Start with the fuel tanks selector switch on the right main tank.

Do a normal run up, checking backup ignition and carb heat.

 

Take Off and Climb Out

Announce that you are taking position on the active runway for the aircraft’s first flight.

“Louisa traffic, experimental 978ER is taking runway 2 7 for VFR in the vicinity of the airport. This will be the airplanes first flight, Louisa”

Pull onto the runway and gently throttle to full throttle.

At the go no-go marker the plane must have reach takeoff speed of 60 knots.

If the speed has not been made the flight shall be aborted.

At 60 knots back pressure on the stick should be carefully applied to bring the nose off of the ground.  Allow the plane to fly itself off of the ground as it gains speed.

As it climbs be prepared for an engine out event.  In a low altitude (less than 800 feet) engine out event, steer the airplane forward toward any available clearing.  Maintain speed above stall (40 knots) using pitch.  

Climb to 3500 feet MSL watching the engine temperatures and oil pressure.  Use trim to remove pressure from the stick in both pitch and roll.  If temperature climbs toward the danger zone lower the nose and reduce power.

Stay in the vicinity of the airport.

 

Level Flight

At 3500 MSL feet the plane should be leveled off and throttle back to cruise between 80 and 90 knots.  In this configuration we will be testing that the controls are reasonably well adjusted.  

Use shallow gentle turns, and pick a coarse back toward the airport.  We want to keep the airport an easy glide below us.

Once leveled off switch from the right to the left tank.

Occasionally announce your position and watch for traffic.

“Louisa Traffic, experimental 978ER is at 3500 feet over the airport heading East, Louisa”

Choose a direction and maintain a straight coarse.

Center the trim tab adjusters.

The pilot will record the amount of force needed to maintain straight and level flight. 

Roll record, high, medium, low or hands off and the direction left or right.

            Roll ___________ amount of force,   _________ left or right

For pitch record high, medium or low or hands off and the direction up or down.

            Pitch __________ amount of force, __________ nose up or down

For yaw record high, medium or low or hands off and the direction right or left.

            Yaw __________ amount of force, __________ left or right

 

At the end of that run turn back toward the airport, keeping it below you and an easy glide.  Announce your position.

Now use trim to see how much trim is required to make it fly hands off. While maintaining altitude.

            Record the amount of trim needed.

            Cruise Pitch Trim__________% Up or down __________

            Cruise Roll Trim ___________% Up or down __________

Turn back toward the airport and choose a direction.

 

Reduce speed to 70 knots and trim to maintain altitude.  Apply carb heat. 

We will now test the flaps.

Be prepared for sudden changes in flight attitude.

Be prepared to raise flaps in case of loss of control due to their use.

Pull in 1 notch of flaps.  Note any change in pitch, and speed.  If speed is less than 60 knots add some power to make up for it.  Maintain altitude. 

Now add another notch of flaps.  Again, note change in pitch and speed, adding power to maintain 60 knots and altitude. 

Now add in another notch of flaps.  Note pitch and speed changes, and maintain 60 knots.

Note any tendency to roll due to use of flaps.

Pull the nose up and slow to 45 knots.

            Does the plane stall at or above 45 knots? ____________

            If so what speed? ___________

If the plane continues flying without stalling at 45 knots with flaps down this will be good to know when we return to the airport.  If it did not stall, we will land at 50 knots.

If it did stall land at 10 knots above the speed at which it stalled.

Other stall tests will be conducted on the next flight.

Raise the flaps back to the full up position and add power.

 

Descent

Announce your location and intention to land.

“Louisa Traffic, experimental 978ER 1 mile south at 3000 feet, to land, runway 27, Louisa”

Start descending to the airport and join the pattern.

When you start the descent employ carburetor heat.

As you descend monitor your CHTs.  If the engine cools too quickly it can damage the engine.  Slow the decent and add power if the condition arises.

As you descend adjust the trim.  Note the amount of trim.

Descend Pitch Trim ________% Up or Down?_________

Descend Roll Trim _________% Up or Down?_________

Maintain 80 knots while in the pattern until you are astride the numbers.

Reduce power and let the plane slow to 70 knots.

Add one notch of flaps.

At between a half and quarter of a mile turn base.

Announce your position.

Trim the controls to remove any pressures.

Add the second notch of flaps.

Maintain 65 knots

Turn final.

Announce your position.

Add the final notch of flaps.

Roll the plane into the crosswind, and use opposite rudder to keep it straight with the runway.

Maintain 60 knots.

Just above the runway (5 feet) level out. 

Let the midway point on the runway be the go-around point.  If you aren’t on the pavement by then, go around, full throttle then raise flaps.

If you are above 45 knots raise the nose a little more.

As the mains touch down, be prepared for the plane to pitch forward, apply back pressure at the sound of tires touching to avoid this.  Let the plane settle onto the runway.

Be prepared for a change in direction as you change from steering with the rudder to steering with the nose wheel.

Don’t use brakes until the nose wheel is down.

Use brakes sparingly and gently.  Avoid over steering with brakes.

Don’t get complacent until the plane is tied down.

Note the engine parameters as the plane is taxied to the parking area.

 

Post First Flight

Once the flight is over, the pilot should record what he has learned in a flight report.

While hard data might not have been recorded impressions of climb performance, control rigging, engine performance, temperatures etc are all good starting places.

The length of the flight should be recorded, and the number of hours on the engine.

The video, voice and other records of the flight should be reviewed before the next flight.  Any issues discovered during the first flight should be corrected before the next flight.

Before the next flight an examination of the plane should be conducted.  Looking for damage of any kind and or missing or loose hardware.  Engine mounts, prop and spinner, landing gear should all be examined closely.

 

Date ______________________       Duration of Flight ____________

Hours on Engine _____________

 

Rate the following.

Engine Smoothness _____________________________________________________

Engine Power          _____________________________________________________

Mixture Control ________________________________________________________

Throttle Control ________________________________________________________

Engine Idle ____________________________________________________________

CHT _________________________________________________________________

Oil Temp _____________________________________________________________

Oil Pressure ___________________________________________________________

Charging System _______________________________________________________

Climb Performance _____________________________________________________

Rudder Rigging       _____________________________________________________

Elevator Rigging     _____________________________________________________

Aileron Rigging      _____________________________________________________

Flaps ________________________________________________________________

Stall _________________________________________________________________

Softness of Landing _____________________________________________________

Brakes _______________________________________________________________

Comfort ______________________________________________________________

AIS __________________________________________________________________

Altimeter _____________________________________________________________

EFIS _________________________________________________________________

GPS _________________________________________________________________

Radio ________________________________________________________________

 

 

Evaluate the Condition of:

Wheel Pants ___________________________________________________________

Main Gear ____________________________________________________________

Fuselage around main gear attachment _______________________________________

Nose Gear ______________________________________________________________

Fire Wall Around Nose Gear attachment ______________________________________

Spinner ________________________________________________________________

Propeller _______________________________________________________________

Exhaust ________________________________________________________________

Motor Mount ____________________________________________________________

Firewall around motor mount _______________________________________________

Canopy ________________________________________________________________

Flaps __________________________________________________________________

Other Issues _____________________________________________________________

 

Change the oil and filter.  Use a magnet to look for metal in the oil. 

Engine Condition based on oil inspection______________________________________________________________________________________________________________________________________

 


 

2. Second Flight

With this flight we repeat the first flight test.  We check that issues found on the first test are corrected.  All issues identified in the first flight should have been fixed.  The flight should last between half and hour to 45 minutes.

Record the weather conditions.

Ambient Temp _______ Relative Humidity _________ Barometric Pressure ______

 

Date ______________________       Duration of Flight ____________

Hours on Engine _____________

 

Rate the following.

Engine Smoothness _____________________________________________________

Engine Power          _____________________________________________________

Mixture Control ________________________________________________________

Throttle Control ________________________________________________________

Engine Idle ____________________________________________________________

CHT _________________________________________________________________

Oil Temp _____________________________________________________________

Oil Pressure ___________________________________________________________

Charging System _______________________________________________________

Climb Performance _____________________________________________________

Rudder Rigging       _____________________________________________________

Elevator Rigging     _____________________________________________________

Aileron Rigging      _____________________________________________________

Flaps ________________________________________________________________

Stall _________________________________________________________________

Softness of Landing _____________________________________________________

Brakes _______________________________________________________________

Comfort ______________________________________________________________

AIS __________________________________________________________________

Altimeter _____________________________________________________________

EFIS _________________________________________________________________

GPS _________________________________________________________________

Radio ________________________________________________________________

 

 

Evaluate the Condition of:

Wheel Pants ___________________________________________________________

Main Gear ____________________________________________________________

Fuselage around main gear attachment _______________________________________

Nose Gear ______________________________________________________________

Fire Wall Around Nose Gear attachment ______________________________________

Spinner ________________________________________________________________

Propeller _______________________________________________________________

Exhaust ________________________________________________________________

Motor Mount ____________________________________________________________

Firewall around motor mount _______________________________________________

Canopy ________________________________________________________________

Flaps __________________________________________________________________

Other Issues _____________________________________________________________

 

Change the oil and filter.  Use a magnet to look for metal in the oil. 

Engine Condition based on oil inspection______________________________________________________________________________________________________________________________________

 

3. Third Flight

This flight will be used to test engine performance and reliability.  The plane will be prepped and the same preflight conditions must be met as the first 2 flights.

Record the weather conditions.

Ambient Temp _______ Relative Humidity _________ Barometric Pressure ______

On all phases of the flight record the engine performance parameters.

Run Up

            Oil Temp         _________

            CHT                _________

            Oil Pressure     _________

           

Climb Out

            Oil Temp         _________

            CHT                _________

            Oil Pressure     _________

            Full Power RPM _______

            Vertical Speed _________

 

Level Flight

After reaching altitude announce your position and switch tanks.

Stay in the vicinity of the airport.

            Oil Temp         _________

            CHT                _________

            Oil Pressure     _________

Briefly apply full power in level flight, do not allow the engine RPMs to get into the danger zone as marked in yellow on the tach.  Do not allow the airspeed to get into the danger zone as marked on the Airspeed Indicator.

            Full Power RPM _______(Indicate if powering back was required to avoid over revving)

            Full Power Airspeed   _________ (Indicate if powering back was required to avoid over speeding)

Descent

During descent announce your intention to land.

Apply carb heat.

            Oil Temp         _________

            CHT                _________

            Oil Pressure     _________

            RPM                _________

 

Post Flight Evaluation

Date ______________________       Duration of Flight ____________

Hours on Engine _____________

 

Rate the following.

Engine Smoothness _____________________________________________________

Engine Power          _____________________________________________________

Mixture Control ________________________________________________________

Throttle Control ________________________________________________________

Engine Idle ____________________________________________________________

CHT _________________________________________________________________

Oil Temp _____________________________________________________________

Oil Pressure ___________________________________________________________

Charging System _______________________________________________________

Climb Performance _____________________________________________________

Rudder Rigging       _____________________________________________________

Elevator Rigging     _____________________________________________________

Aileron Rigging      _____________________________________________________

Flaps ________________________________________________________________

Stall _________________________________________________________________

Softness of Landing _____________________________________________________

Brakes _______________________________________________________________

Comfort ______________________________________________________________

AIS __________________________________________________________________

Altimeter _____________________________________________________________

EFIS _________________________________________________________________

GPS _________________________________________________________________

Radio ________________________________________________________________

 

 

Evaluate the Condition of:

Wheel Pants ___________________________________________________________

Main Gear ____________________________________________________________

Fuselage around main gear attachment _______________________________________

Nose Gear ______________________________________________________________

Fire Wall Around Nose Gear attachment ______________________________________

Spinner ________________________________________________________________

Propeller _______________________________________________________________

Exhaust ________________________________________________________________

Motor Mount ____________________________________________________________

Firewall around motor mount _______________________________________________

Canopy ________________________________________________________________

Flaps __________________________________________________________________

Other Issues _____________________________________________________________

4. Forth Flight

This flight will be used to verify the accuracy of the primary flight instruments.

All issues discovered on the previous flight must have been fixed before continuing.

Prepare the plane and look for the same preflight conditions as on the previous 3 flights.

At this stage we are not yet ready to venture far from the landing strip. 

 

Record the weather conditions.

Ambient Temp _______ Relative Humidity _________ Barometric Pressure ______

 

Climb out as described in the first test.

 

Once an altitude of 3500 feet MSL is reached, level off and select a coarse.  Stay in the vicinity of the airport.

 

Compass and Airspeed Indicator

Record the direction from each instrument

            Vertical Card Compass _______degrees

            GPS ______________________degrees

            EFIS ______________________ degrees

 

Record Airspeed from each instrument.

            Airspeed Indicator ___________knots

            GPS ______________________knots

            EFIS ______________________knots

 

Turn to a direction 180 degrees from the one just selected and record the same data.

 

Record the direction from each instrument

            Vertical Card Compass _______degrees

            GPS ______________________degrees

            EFIS ______________________degrees

 

Record Airspeed from each instrument.

            Airspeed Indicator ___________knots

            GPS ______________________knots

            EFIS ______________________knots

 

Vertical Speed and LRI

 

In level flight, check that with the Vertical Speed Indicator indicating zero, that the Altimeter is not increasing or decreasing.  Record the LRI reading. ________

Record the Vertical Speed, Altimeter and the time and LRI during a climb to 4500 feet MSL.  Try to maintain a constant climb as indicated on the VSI.

 Start Time ______ Altitude ___________ Vertical Speed ________ LRI _______

Mid Time _______ Altitude ___________ Vertical Speed ________ LRI ______

Final Time ______ Altitude ___________ Vertical Speed ________ LRI _______

 

While At 4500 feet we will do 2 stalls, one power on the other power off.

The goal here is to get the LRI readings as we reach a stall condition.  After each stall return to 4500 feet.

Level Flight LRI __________

Power On Stall LRI ________ Airspeed _______ GPS Speed ________

Power Off Stall LRI ________ Airspeed _______ GPS Speed ________

 

Monitor the same parameters during decent to 2000 feet, then land normally.

Start Time ______ Altitude ___________ Vertical Speed ________ LRI _______

Mid Time _______ Altitude ___________ Vertical Speed ________ LRI ______

Final Time ______ Altitude ___________ Vertical Speed ________ LRI _______

 

Post Flight Evaluation

Date ______________________       Duration of Flight ____________

Hours on Engine _____________

 

The data obtained during this test should be used to correct the Operators Manual.

Vs was recorded during the test.  Later tests will determin Vs0 (stall with flaps).

Deviations in the vertical card compass should be measurable with the data recorded from the other two sources.  The deviation card will be corrected.

 

Rate the following.

Engine Smoothness _____________________________________________________

Engine Power          _____________________________________________________

Mixture Control ________________________________________________________

Throttle Control ________________________________________________________

Engine Idle ____________________________________________________________

CHT _________________________________________________________________

Oil Temp _____________________________________________________________

Oil Pressure ___________________________________________________________

Charging System _______________________________________________________

Climb Performance _____________________________________________________

Rudder Rigging       _____________________________________________________

Elevator Rigging     _____________________________________________________

Aileron Rigging      _____________________________________________________

Flaps ________________________________________________________________

Stall _________________________________________________________________

Softness of Landing _____________________________________________________

Brakes _______________________________________________________________

Comfort ______________________________________________________________

AIS __________________________________________________________________

Altimeter _____________________________________________________________

EFIS _________________________________________________________________

GPS _________________________________________________________________

Radio ________________________________________________________________

 

 

Evaluate the Condition of:

Wheel Pants ___________________________________________________________

Main Gear ____________________________________________________________

Fuselage around main gear attachment _______________________________________

Nose Gear ______________________________________________________________

Fire Wall Around Nose Gear attachment ______________________________________

Spinner ________________________________________________________________

Propeller _______________________________________________________________

Exhaust ________________________________________________________________

Motor Mount ____________________________________________________________

Firewall around motor mount _______________________________________________

Canopy ________________________________________________________________

Flaps __________________________________________________________________

Other Issues _____________________________________________________________

 


 

5. Fifth Flight

This test is to confirm and refine our information about climb performance.

The initial flight tests having been concluded the ground crew should be released and the remaining tests conducted without them.  By this time we should have gained some confidence in the systems to perform safely.  The following tests will take us farther from the home field, but caution dictates keeping a landing field in site at all times.  The plane should remain in the flight test plan area and remain out of populated areas.

Figure 1 Flight Test Area

In this test it would best if we were recording the NMEA GGA messages from the GPS.

Connect a computer with a null modem cable to the GPS output serial port and use Hyperterminal to record the output.  This will give us time, latitude, longitude, and altitude.

 

We can process this data after to the flights to see where the maximum Vx and Vy speeds were reached.

 

Record the weather conditions.

Ambient Temp _______ Relative Humidity _________ Barometric Pressure ______

Finding Best Climb Speed Vy

Apply full power and raise the nose gradually looking for the highest vertical airspeed.

Record the pairs.  Once the Vertical Speed has reached it’s maximum and starts to drop again. Record the airspeed where it stabilizes.  Watch CHTs during this test and avoid over heating the engine.  Note any tendency to overheat.

 

Airspeed ______________ Vertical Speed ____________

Airspeed ______________ Vertical Speed ____________

Airspeed ______________ Vertical Speed ____________

Airspeed ______________ Vertical Speed ____________

Airspeed ______________ Vertical Speed ____________

Airspeed ______________ Vertical Speed ____________

Airspeed ______________ Vertical Speed ____________

Airspeed ______________ Vertical Speed ____________

Airspeed ______________ Best Vertical Speed __________

Resulting Altitude ____________

Continue climbing to 4500 feet MSL.  Switch tanks.  Announce position.

 

Vy was recorded during the test and the data should be sufficient to calculate Vx.

 

Finding Best Climb Angle Vx

Apply full power and climb gradually raise the nose until you’ve reach 15 degrees of pitch.  Record:

Time_______ Airspeed _________, VSI _________, Altitude________ LRI _______

 

Post processing the data entails finding the speed and pitch angle that provided the most height gained in the shortest horizontal distance (Vx).  This is what want for clearing trees or terrain.

 

The speed measured by the Vertical Speed Indicator is Vy.  This is the most height gained in the least amount of time, and is not what is needed when clearing terrain.

 

Post Flight Evaluation

Date ______________________       Duration of Flight ____________

Hours on Engine _____________

 

The data obtained during this test should be used to correct the Operators Manual.

Vs was recorded during the test.  Later tests will determin Vs0 (stall with flaps).

Deviations in the vertical card compass should be measurable with the data recorded from the other two sources.  The deviation card will be corrected.

 

Rate the following.

Engine Smoothness _____________________________________________________

Engine Power          _____________________________________________________

Mixture Control ________________________________________________________

Throttle Control ________________________________________________________

Engine Idle ____________________________________________________________

CHT _________________________________________________________________

Oil Temp _____________________________________________________________

Oil Pressure ___________________________________________________________

Charging System _______________________________________________________

Climb Performance _____________________________________________________

Rudder Rigging       _____________________________________________________

Elevator Rigging     _____________________________________________________

Aileron Rigging      _____________________________________________________

Flaps ________________________________________________________________

Stall _________________________________________________________________

Softness of Landing _____________________________________________________

Brakes _______________________________________________________________

Comfort ______________________________________________________________

AIS __________________________________________________________________

Altimeter _____________________________________________________________

EFIS _________________________________________________________________

GPS _________________________________________________________________

Radio ________________________________________________________________

 

 

Evaluate the Condition of:

Wheel Pants ___________________________________________________________

Main Gear ____________________________________________________________

Fuselage around main gear attachment _______________________________________

Nose Gear ______________________________________________________________

Fire Wall Around Nose Gear attachment ______________________________________

Spinner ________________________________________________________________

Propeller _______________________________________________________________

Exhaust ________________________________________________________________

Motor Mount ____________________________________________________________

Firewall around motor mount _______________________________________________

Canopy ________________________________________________________________

Flaps __________________________________________________________________

Other Issues _____________________________________________________________

 


6. Sixth Flight

During this flight test we will refine our knowledge about stall characteristics of the airplane.  Climb up to 4500 MSL to perform these tests.

Record the weather conditions.

Ambient Temp _______ Relative Humidity _________ Barometric Pressure ______

Power On Clean Stalls

These are the stalls most likely to occur during a botched climb out to clear terrain.

From level flight gradually add back pressure forcing the nose up.  As the airspeed drops bring the power up to full power.  You should find yourself on the backside of the power curve.  In other words even at full power you are not gaining altitude.  Record the Airspeed     __________    __________

Pitch angle      __________    __________

VSI                  __________   __________

LRI                  __________    __________

Altimeter         __________    __________

Nose up just a bit more should induce a stall.  Push the nose down to break the stall.

Record the speed at the moment of stall, along with LRI indication and pitch angle.

Airspeed          __________    __________    _________

Pitch angle      __________    __________    _________     

VSI                  __________   __________    _________

LRI                  __________    __________    _________

Altimeter         __________    __________    _________

Do this several times. 

 

Power On Dirty Stalls

These types are stalls can be experienced when going around after a botched landing.  The pilot can forget to bring the flaps up when the decision is made to go around.  Added drag with more lift at low speed can cause the airplane to get into trouble.

Set up for this test the same was as before but this time start at a slow speed of 55 knots with full flaps.  Gradually bring the nose up while adding power to maintain altitude.

You should be able to reach the point of full power without gaining altitude.

Record the same information.

Airspeed          __________    __________

Pitch angle      __________    __________

VSI                  __________   __________

LRI                  __________    __________

Altimeter         __________    __________

Nose up just a bit more should induce a stall.  Push the nose down and bring flaps up to break the stall.

Airspeed          __________    __________    _________

Pitch angle      __________    __________    _________     

VSI                  __________   __________    _________

LRI                  __________    __________    _________

Altimeter         __________    __________    _________

 

Power Off Clean Stalls

These kinds of stalls are common in engine out situations at low altitude.  The flaps are up in the takeoff position and the engine quits. 

This time start from level controlled flight and slowly power back.

Maintain altitude by pitching the nose up.

Record the speed, pitch and LRI reading at which a stall occurs.  Break the stall by pushing the nose down and applying power.

Airspeed          __________    __________    _________

Pitch angle      __________    __________    _________     

LRI                  __________    __________    _________

Altimeter         __________    __________    _________

Power Off Dirty Stall

This is the kind of stall that can occur when landing and the pilot flares the plane too high.  The plane stalls and drops hard onto the runway.

This time start from level controlled flight and slowly power back.

Maintain altitude by pitching the nose up.

When you reach 70 knots deploy one notch of flaps.

            Record LRI _______

When you reach 60 knots deploy the second notch of flaps.

            Record LRI _______

When you reach 50 knots deploy the third notch of flaps.

            Record LRI _______

Record the speed at which a stall occurs.  Break the stall by pushing the nose down and applying power.

Airspeed          __________    __________    _________

Pitch angle      __________    __________    _________     

LRI                  __________    __________    _________

Altimeter         __________    __________    _________

Post Flight Evaluation

Date ______________________       Duration of Flight ____________

Hours on Engine _____________

 

The data obtained during this test should be used to correct the Operators Manual.

Vs was recorded during the test.  Later tests will determin Vs0 (stall with flaps).

Deviations in the vertical card compass should be measurable with the data recorded from the other two sources.  The deviation card will be corrected.

 

Rate the following.

Engine Smoothness _____________________________________________________

Engine Power          _____________________________________________________

Mixture Control ________________________________________________________

Throttle Control ________________________________________________________

Engine Idle ____________________________________________________________

CHT _________________________________________________________________

Oil Temp _____________________________________________________________

Oil Pressure ___________________________________________________________

Charging System _______________________________________________________

Climb Performance _____________________________________________________

Rudder Rigging       _____________________________________________________

Elevator Rigging     _____________________________________________________

Aileron Rigging      _____________________________________________________

Flaps ________________________________________________________________

Stall _________________________________________________________________

Softness of Landing _____________________________________________________

Brakes _______________________________________________________________

Comfort ______________________________________________________________

AIS __________________________________________________________________

Altimeter _____________________________________________________________

EFIS _________________________________________________________________

GPS _________________________________________________________________

Radio ________________________________________________________________

 

 

Evaluate the Condition of:

Wheel Pants ___________________________________________________________

Main Gear ____________________________________________________________

Fuselage around main gear attachment _______________________________________

Nose Gear ______________________________________________________________

Fire Wall Around Nose Gear attachment ______________________________________

Spinner ________________________________________________________________

Propeller _______________________________________________________________

Exhaust ________________________________________________________________

Motor Mount ____________________________________________________________

Firewall around motor mount _______________________________________________

Canopy ________________________________________________________________

Flaps __________________________________________________________________

Other Issues _____________________________________________________________           


 

7. Seventh Flight

This flight is to investigate the airplanes control stability.

Various Tests will be conducted to determine Pitch, Roll and Yaw stability of the aircraft.

 

The tests will be looking for the presence of negative stability, that is the tendency of the aircraft to move further and further away from the state of equilibrium when a disturbance is encountered.  The aircraft should demonstrate either positive stability, that is it moves back to the original state of equilibrium or it demonstrates static equilibrium, that is it remains in the attitude that it went to during the disturbance.  Static equilibrium means it has gone to a different state of equilibrium.  For instance a constant banking turn instead of straight ahead.

 

Before conducting the test it would be a good time in the testing to conduct a thorough inspection of the aircraft.  Recheck the engine mounts, propeller bolt torques, and all flight control hardware.  Look at hinge pins check all controls for freedom of movement and unacceptable slop.  All access covers should be removed and airframe inspected.  Tire pressure, engine oil, brake oil should be checked.  Wheel pants and other fairings should be checked for damage or looseness.  Canopy hinge and latch should be inspected and evaluated for soundness.  Main and nose landing gear should be inspected.  Special attention should be made in checking that the control cables have the correct tension on them.  If any issues are found they should be fixed before conducting the test.

Aileron cable tension ____________             Elevator cable tension _________

Rudder cable tension ______________

 

Before conducting the flight record the weather conditions.

Ambient Temp _______ Relative Humidity _________ Barometric Pressure ______

 

The aircraft should be loaded so that it is safely within its weight and balance envelope.

 

Note: If during any part of the following test any tendency for the control surfaces to flutter is suspected reduce power and land the aircraft immediately.

 

Climb out to an altitude of 6500 MSL.

 

Test for Static Longitudinal Stability

 

Choose a direction and trim for hands off, straight and level flight and 100 knots.  Leave the airplane in this trim for the rest of the test.

 

Apply a light pull on the stick to slow the airplane to 90 knots.  It should require maintaining a pull force to keep the airplane at this speed.

 

If it does require a pull force pull back a little more and bring the airplane to 80 knots.

 

If the airplane still requires a continued back pressure to maintain this lower speed it has positive static longitudinal stability.

 

If at either test speed it requires no back pressure to maintain the lower speed, then the airplane has neutral static longitudinal stability.

 

If at either speed it requires a push force on the stick to maintain the reduced airspeed, then the airplane has a NEGATIVE static longitudinal stability.

 

Put the plane back in straight and level flight and 90 knots and trim for hands off flight.

 

Push the stick forward enough to bring the speed up to 100 knots. 

 

It should require a continued pushing force to maintain 100 knots.

 

If a pull force is required to maintain the higher air speed then the airplane has NEGATIVE static longitudinal stability.

 

WARNING: If negative static longitudinal stability is observed discontinue the test and have this fixed before other flights.

 

The plane demonstrates which kind of static longitudinal stability?

________________ positive, neutral, negative.

 

After confirming the aircraft has positive static longitudinal stability the flight test can be continued to check for positive dynamic longitudinal stability.

 

Test for Dynamic Longitudinal Stability

 

Select a direction and put the plane in straight and level flight at 100 knots and trimmed for hands off flying.

 

Push the stick nose down then back to level, and let go of the stick as the planes attitude comes back to level.  A (short period) positive dynamic longitudinal stability is demonstrated by the airplane oscillating briefly around a level attitude then quickly damping to steady level flight.

 

With the airplane in level flight at 100 knots and trimmed for hands off flying.

 

Pull the stick back to reduce the airspeed to 90 knots then let go. 

 

A (long period) positive dynamic longitudinal balance is demonstrated if the plane oscillates around 100 knots and then damps back out to 100 knots.  Friction in the controls may cause the speed to setting a slightly higher or lower speed.

 

If the amplitude increases with time the airplane has a negative or divergent dynamic longitudinal stability.   This is not necessarily a dangerous behavior, however it does mean the airplane will require frequent adjustments to keep flying level and at a particular airspeed.

 

If the airplane continues to oscillate at the same amplitude around 100 knots this means the plane is demonstrating neutral dynamic longitudinal stability.

 

The plane demonstrates which kind of dynamic longitudinal stability?

________________ positive, neutral, negative.

 

Post Stability Flight Test

After the flight the pilot should right down his impression of the airplanes control stability in a flight test report.  

The operator’s manual should be updated to reflect the findings of this test.

If necessary, and problems with divergence should be analyzed and corrected, and the tests repeated.

 

Date _________________.

 

 

Test for Lateral Directional Stability

Make the altitude a least 5000 MSL.

Select a heading and again trim the airplane for straight and level flight at 90 knots, hands free.

Maintain the heading while gradually banking the airplane with aileron and applying opposite rudder.  Continue until the airplane is at 10 degrees of bank.

Throughout the maneuver increased stick and rudder pressure to be required.  There should not be any tendency for force reversal in either aileron or rudder.

With the airplane at 10 degrees of roll and on a steady heading with opposite rudder, release the stick forces.  With the ailerons released the airplane should return to level flight on its own. 

If the airplane returns to level flight it is demonstrating positive static roll stability.

If the airplane remains near 10 degrees of bank it demonstrating neutral static roll stability.

If the airplane begins to roll more than 10 degrees of bank use the stick to bring the wings level.  The airplane has demonstrated negative roll stability.

The airplane demonstrates which kind of static roll stability.

Roll stability _____________________ positive, neutral, negative.

Now check static yaw stability by moving the rudder right or left, and maintain wings level using opposite aileron. 

When the rudder is released if the plane returns to straight flight it is demonstrating positive static yaw stability.

If the plane maintains the yaw put in with the rudder it is demonstrating neutral yaw stability. 

If the plane begins to increase it yaw when the rudder is released use the rudder peddles to bring the plane back to a straight heading.  This would be an example of negative yaw stability.

Which kind of static yaw stability did the airplane demonstrate.

Yaw stability________________________ positive, neutral, negative.

 

Spiral Stability Test

Now bring the airplane back to straight and level trim at 90 knots and 5000 feet.  Begin a banking turn with 15 to 20 degrees of bank.  Now release the stick. 

If the bank angle decreases spiral stability is positive.

If the bank angle stays the same spiral stability is neutral.

If the bank angle increases spiral stability is negative.

Negative spiral stability is not necessarily dangerous if the divergence isn’t too great, but will require more constant attention to attitude control.

 

Which kind of spiral stability did the airplane demonstrate:

Spiral stability ______________________ positive, neutral, negative.


8. Eighth Flight

This test flight is a test of how the airplane is to be used and also provides an opportunity to measure fuel consumption.  The pilot will be free to explore the flight test area, with no particular test to perform.  The pilot will use this time to collect his thoughts on issues, improvements, corrections that need to be made, but didn’t quite fit into the description of the planned tests.  This flight will start with both main tanks filled.   The flight should last about 2 hours.  Safe altitude shall be maintained to allow an easy glide to recognized landing sites.

Upon returning to the airport the fuel tanks shall be refilled.

Date ______________________       Duration of flight _________            

Gallons Used _____________

Gallons Per Hour _________

Record Hours on Engine __________

 


9. Ninth Flight

This flight will test and increased aircraft weight load by using fuel as the weight.

The plane will be fully fueled.

The pilot will be free to explore the test flight area.  The pilot will use the fuel in the auxiliary tanks only.  24/6 gallons per hour is a flight duration of 4 hours.  The pilot is free to stop after 2 hours to rest before continuing the test flight.  This is a chance to practice managing the fuel tanks when the auxiliary tanks are in use.  The fuel gauge should be set to read the tank being used each time a tank selector is switched.

Particular attention should be made to climb and sink rates.

 

10. Tenth Flight

The purpose of this test is to explore flight performance with the aircraft loaded to the Forward CG limit.

Date ______________________       Duration of Flight _____________

Ambient Temp _______ Relative Humidity _________ Barometric Pressure ______

Maximum Load take off distance _________________ feet

Maximum Load climb ______________ Feet per minute

Landing behavior_______________________________________________________

Check for damage.

11. Eleventh Flight

The purpose of this test is to verify flight performance with the aircraft loaded to the aft CG limit.

Date ______________________       Duration of Flight _____________

Ambient Temp _______ Relative Humidity _________ Barometric Pressure ______

Maximum Load take off distance _________________ feet

Maximum Load climb ______________ Feet per minute

Landing behavior_______________________________________________________

Check for damage.

12. Twelfth Flight Test

The purpose of this test is to verify flight performance with the aircraft loaded to the maximum gross weight.  Dead weight in the form of bags of dog food, etc will be used to substitute for passenger weight.  Weight will be distributed in such a way that the weight and balance in a safe CG range.  Particular attention should be made to take off and climb performance.

 

Date ______________________       Duration of Flight _____________

Ambient Temp _______ Relative Humidity _________ Barometric Pressure ______

Maximum Load takeoff distance _________________ feet

Maximum Load climb ______________ Feet per minute

Landing behavior_______________________________________________________

Check for damage.

13. Thirteenth Flight

This flight is to check the electrical systems ability to keep up with the electrical loads.

The voltmeter will be watched as the system is loaded up.  Before take off the radios, GPS and other avionics are turned on, as well as the engine instruments.  This is normal daytime loading and any issues with this amount of load should have already been revealed.  The laptop computer will be used to record the GPS output during the test, but leave this disconnected initially.  If at anytime the low voltage warning light comes on reduce load by turning things off.  The duration of this test flight should be about 2 hours.

The plane will be flown to a safe altitude of 4500 feet.

Once the plane is in level flight the voltmeter should be recorded. ________

Maintain this configuration for 15 minutes and record the voltmeter again. __________

Plug in the laptop computer to the power supply and record the voltmeter reading. _____

Maintain this configuration for 15 minutes and record the voltmeter again. __________

Turn on the panel and cabin lights and record the voltmeter reading. __________

Maintain this configuration for 15 minutes and record the voltmeter again. __________

Turn on anti collision strobe lights and record the voltmeter. _________

Maintain this configuration for 15 minutes and record the voltmeter again. __________

Turn on the landing lights and record the voltmeter. _________

Maintain this configuration for 15 minutes and record the voltmeter again. __________

Turn on the taxi light and record the voltmeter. ____________

Maintain this configuration for 15 minutes and record the voltmeter again. __________

Return to the airport.

 

Post flight

Date ______________________      

Check the battery charge.

Did the battery remain charged? __________

 

Remainder

It is anticipated that the flight-testing will not go strictly according to plan.  By this point in testing there may have been just those hours described above, or (more likely) issues will be uncovered, corrections made and tests will be repeated.  So we may be at 25 hours at this point or mostly done flying off the required 40 hours.  At this point in the program take a step back and evaluate the aircrafts flightworthiness from a broad perspective.  From this point forward plan what it will take to guarantee the level safety for this plane that I’d be comfortable with carrying friends and family as passengers in.

 

Conclusion

At the end of the flight test program the airplane should undergo a thorough airframe and power plant inspection.  The engine should have its plugs removed and compression tests performed.

The airframe should have all inspection covers removed and all of the airframe examined for damage, wear and tear, loose rivets, loose hardware etc.