DONE 4O Emergencies - Landing Gear

Question 0

• AIRPLANE ONLY*

2. What recommended procedure should be used if the landing gear fails to retract after takeoff? (POH)

Answer 0

If the landing gear fails to retract normally, the following checklist should be completed.
a. Check that the master switch is set to “On.”
b. Check that the landing gear lever is in the full up position.
c. Check that the gear pump and landing gear circuit breakers are “In.”
d. Check the gear up light.
e. Recycle the landing gear lever.
f. Check for proper gear motor operation by examining the ammeter and listening for noise.
Note: If you still hear a gear motor noise after 1 minute, pull out the gear pump circuit breaker to avoid overheating the motor. You can reinstall the circuit breaker when needed for landing.

Question 1

• AIRPLANE ONLY*

1. If a positive gear down indication is not received, what action is recommended first? (POH)

Answer 1

Several preliminary checks can be made prior to using the emergency extension procedure:

a. Check that the master switch is set to “On.”
b. Check that the “Landing Gear” and “Gear Pump” circuit breakers are in.
c. Check both “Landing Gear” position indicators by using the “Press-To-Test” feature and by rotating the dimming shutter.
d. If a bulb has burned out, you can use the other operating bulb as a temporary replacement.

Question 2

• AIRPLANE ONLY*

3. How is the emergency gear extension system operated?

Answer 2

There is a hand-operated pump, located between the front seats, which may be used for manual extension of the landing gear in the event of a hydraulic failure.

Question 3

• AIRPLANE ONLY*

4. What is the recommended procedure if the landing gear will not extend normally? (POH)

Answer 3

If the landing gear fails to extend normally, the following checklist should be completed.

a. Check that the master switch is “On.”
b. Check that the landing gear lever is “Down.”
c. Check that the gear pump and landing gear circuit breakers are “In.”
d. Extend the handle and pump the emergency hand pump until heavy resistance is encountered (about 30–40 times).
e. Check that the gear down light is “On.”
f. Secure the pump handle.

Question 4

• AIRPLANE ONLY*
  5. What procedure should be followed if a pilot does not receive a positive indication of the gear being down and locked? (POH)

Answer 4

Attempt to extend the gear manually. If this action is unsuccessful, plan for a gear-up landing. The following checklist should be completed:

a. Complete the “before landing” checklist.
b. Establish a normal approach configuration with full flaps.
c. Check that the gear pump and landing gear circuit breakers are “In.”
d. Initiate a tail low landing.
e. Use a minimum amount of braking.
f. Taxi slowly.
g. Shut down the engine and then inspect the gear.

Question 5

• AIRPLANE ONLY*

6. What is the recommended procedure in dealing with a flat main landing gear tire? (POH)

Answer 5

a. Establish a normal approach configuration with full flaps.
b. Touchdown with the good tire first on that side of the runway and keep the aircraft off of the flat tire for as long as possible.
c. Use braking on the good wheel as required to maintain directional control.

Question 6

• AIRPLANE ONLY*

7. What is the recommended procedure to follow if the nose gear is unsafe or the tire is flat? (POH)

Answer 6

a. Complete the before landing checklist.
b. Shift weight to the rear by moving passengers and/or baggage to the rear.
c. Set the flaps to the 30° position.
d. Unlatch all doors.
e. After committing to a landing, set both the avionics and master switch to the “Off” position.
f. Initiate touchdown in a slightly tail low configuration.
g. Set the mixture control to the “Idle-Cutoff” position.
h. Set the ignition switch to the “Off” position.
i. Set the fuel selector to the “Off” position.
j. Hold the nose off as long as possible.
k. After landing, evacuate the aircraft as soon as possible.

Question 7

• AIRPLANE ONLY*

8. Why should taxiing on a slush, snow, or ice covered taxiway in a retractable gear airplane be avoided? (AC 91-13)

Answer 7

During thawing conditions, mud and slush can be thrown into wheel wells during taxiing and takeoff. If it then freezes during flight, this mud and slush could create landing gear operational problems. The practice of recycling the gear after a takeoff can be used as a preventive procedure. However, the safest procedure is to avoid these surface conditions with retractable gear aircraft.