AMT Aircraft Landing Gear Systems 2

Question 1

A landing gear unsafe (red) position indicator light typically means:

Accepted Answer

Gear is in transit or not confirmed in a safe position

Answer

Gear is fully extended and locked down

Answer

Landing gear hydraulic system pressure is critically low

Answer

All gear doors are open and awaiting gear extension

Question 2

A squat switch (weight-on-wheels switch) is used primarily to:

Accepted Answer

Prevent landing gear retraction while the aircraft is on the ground

Answer

Measure the aircraft's actual gross weight before departure

Answer

Activate the anti-skid system automatically during the takeoff roll

Answer

Control nose wheel steering authority during high-speed taxi

Question 3

A power-boost brake system uses hydraulic power to:

Accepted Answer

Amplify pilot pedal input forces for more effective braking with less effort

Answer

Completely replace pilot pedal input with fully automated braking

Answer

Operate the brakes only during autoland and rollout operations

Answer

Actuate the parking brake and emergency brake simultaneously

Question 4

Aircraft tires are typically inflated with nitrogen rather than compressed air primarily because:

Accepted Answer

Nitrogen is dry and inert, resisting moisture accumulation and temperature-driven pressure changes

Answer

Nitrogen provides better coefficient of friction on wet runways

Answer

Nitrogen-inflated tires weigh significantly less than air-inflated tires

Answer

FAA Advisory Circulars require nitrogen for all transport category aircraft

Question 5

What is the function of a brake debooster valve?

Accepted Answer

Reduce high system hydraulic pressure to the lower pressure required by the brake assemblies

Answer

Increase hydraulic pressure to the brakes during high-speed rejected takeoffs

Answer

Prevent hydraulic fluid from entering the brake assembly during gear retraction

Answer

Equalize brake pressure between left and right main gear automatically

Question 6

During landing gear retraction, the typical sequence of gear door operation is:

Accepted Answer

Doors open before gear retraction begins, then close after the gear is fully retracted

Answer

Gear doors remain fully open throughout the entire flight

Answer

Doors close before gear retraction begins to streamline airflow

Answer

Gear doors are operated completely independently of gear position

Question 7

On large transport aircraft, nose wheel steering is typically accomplished by:

Accepted Answer

A hydraulic actuator on the nose gear controlled by rudder pedals or a dedicated tiller

Answer

Differential main wheel braking only, with no dedicated steering system

Answer

A mechanical cable system connected directly to the rudder control surface

Answer

An electric motor driving a rack and pinion gear on the nose gear strut