FREE Airframe Mechanic Landing Gear Systems Questions and Answers

Question 1

During a pre-flight inspection, an Airframe Mechanic observes that the nose landing gear oleo strut is fully extended with no visible portion of the chrome piston showing.
What condition does this most likely indicate?

Accepted Answer

The strut has insufficient nitrogen charge.

Answer

The strut is over-serviced with hydraulic fluid.

Answer

The strut has a faulty uplock mechanism.

Answer

The strut's internal snubber valve is stuck open.

Question 2

Which of the following components is primarily responsible for preventing landing gear doors from opening during flight unless commanded to do so?

Accepted Answer

Uplock mechanism

Answer

Selector valve

Answer

Sequence valve

Answer

Shuttle valve

Question 3

A technician is troubleshooting a main landing gear that extends normally but will not retract. All hydraulic pressure readings are within limits, and the selector valve operates correctly. Which component should the technician investigate next as a likely cause?

Accepted Answer

Downlock mechanism

Answer

Emergency extension actuator

Answer

Bleed valve

Answer

Uplock actuator

Question 4

What is the primary function of a squat switch (weight-on-wheels switch) in a landing gear system?

Accepted Answer

To inhibit certain aircraft systems (e.g., thrust reversers, gear retraction) when the aircraft is on the ground.

Answer

To prevent hydraulic system overpressure during gear retraction.

Answer

To indicate when the landing gear is fully retracted.

Answer

To control the sequence of gear door operation during extension and retraction.

Question 5

Which type of landing gear shock absorption system uses a combination of compressed air/nitrogen and hydraulic fluid to cushion landing impacts and absorb taxiing shocks?

Accepted Answer

Oleo-pneumatic (air-oil) strut

Answer

Leaf spring gear

Answer

Rubber disc gear

Answer

Bungee cord gear

Question 6

A flight crew reports a 'gear unsafe' indication for the main landing gear after retraction. The gear is confirmed to be in the up position by visual inspection of the indicator lights. What is the most likely cause of this discrepancy?

Accepted Answer

A malfunctioning uplock microswitch.

Answer

A failed downlock microswitch.

Answer

An over-pressurized hydraulic system.

Answer

A seized landing gear actuator.

During a pre-flight inspection, an Airframe Mechanic observes that the nose landing gear oleo strut is fully extended with no visible portion of the chrome piston showing.What condition does this most likely indicate?

During a pre-flight inspection, an Airframe Mechanic observes that the nose landing gear oleo strut is fully extended with no visible portion of the chrome piston showing.
What condition does this most likely indicate?