Airframe Mechanic Aircraft Landing Gear Systems Questions and Answers

Question 1

An aircraft's retractable landing gear system is equipped with a squat switch, also known as a weight-on-wheels switch. What is the primary function of this switch?

Accepted Answer

To prevent inadvertent retraction of the landing gear while the aircraft is on the ground.

Answer

To illuminate the 'gear down and locked' indicator lights in the cockpit.

Answer

To automatically apply the brakes upon landing.

Answer

To control the nose wheel steering system during taxi operations.

Question 2

When servicing an air/oil oleo shock strut, a mechanic notices that the strut bottoms out on landing but functions normally during taxi. What is the most likely cause of this issue?

Accepted Answer

Low hydraulic fluid level.

Answer

Excessive air pressure.

Answer

Worn-out seals.

Answer

Incorrect type of hydraulic fluid.

Question 3

What is the primary purpose of the torque links (also known as scissors) on a landing gear strut?

Accepted Answer

To prevent the piston from rotating within the cylinder and maintain wheel alignment.

Answer

To assist in retracting and extending the landing gear.

Answer

To absorb the initial shock of landing.

Answer

To provide a mounting point for the brake assembly.

Question 4

A mechanic is performing a landing gear retraction test on a large aircraft. Which of the following is an essential safety precaution that must be taken before beginning the test?

Accepted Answer

Ensure the aircraft is properly supported on jacks and all personnel and equipment are clear of the gear.

Answer

Ensure the hydraulic reservoir is overfilled to account for fluid displacement.

Answer

Disconnect the battery to prevent electrical surges.

Answer

Install all landing gear ground locks and safety pins.

Question 5

Which of the following is the correct fluid and gas combination for servicing a standard oleo-pneumatic shock strut?

Accepted Answer

Mineral-based hydraulic fluid and nitrogen.

Answer

Skydrol and compressed oxygen.

Answer

Engine oil and compressed air.

Answer

Automatic transmission fluid and carbon dioxide.

Question 6

During a walk-around inspection, a pilot reports that the nose gear of a tricycle-gear aircraft is not centered after engine shutdown. What component is designed to straighten the nose wheel before it enters the wheel well during retraction?

Accepted Answer

Internal centering cams or an external roller.

Answer

The shimmy damper.

Answer

The torque links.

Answer

The squat switch.