Airframe Systems & Components: Aircraft Landing Gear Systems 🔊

Question 1

What are two sources of power used to extend and retract landing gear?

Answer 1

Electrical and hydraulic

Question 2

When should landing gear retraction checks be accomplished?

Answer 2

During annual and other type inspections, after replacing landing gear components, and after any hard landing

Question 3

What is used to inflate an oleo type landing gear shock strut?

Answer 3

High pressure source of dry air or nitrogen

Question 4

Where would you look to find proper tire inflation information?

Answer 4

In the Operation Manual and the Aircraft Maintenance Manual in special tire inflation pressure charts based on gross weight

Question 5

What is the purpose of a hydraulic shimmy damper?

Answer 5

It is designed to prevent nose wheel vibrations or “shimmy” during taxiing, landing, and takeoff.

Question 6

What type of care should be given to landing gear shock struts?

Answer 6

Inspect regularly for leakage of fluid and proper extension. The exposed portion should be wiped clean daily and inspected for scoring or corrosion.

Question 7

What is the effect of under inflated tires?

Answer 7

They are more likely to creep or slip on the wheel when landing or braking. They also cause rapid, uneven wear at or near the edges of the tread.

Question 8

What is the purpose of the rubber o-ring mounted on the mating surface of the outer wheel half of a split type wheel?

Answer 8

Prevents air leakage from a tubeless tire

Question 9

What are three types of aircraft brake systems?

Answer 9

Independent, power boosted, and power control type

Question 10

What is the purpose of a shuttle valve in a power control system?

Answer 10

They isolate the emergency brake system from the normal one allowing the fluid to actuate the emergency brakes

Question 11

What is the purpose of the main landing gear torque link?

Answer 11

Keep the landing gear in alignment

Question 12

What is used to prevent a nose gear from being retracted with the wheel out of center position?

Answer 12

Centering devices such as an internal centering cam or an external track

Question 13

What is used in a split wheel assembly to keep air from leaking out between the wheel halves?

Answer 13

An o-ring

Question 14

What is the purpose of the fusible plug in some aircraft wheels?

Answer 14

It is designed to melt at a specific temperature and relieve air pressure to prevent the tire from blowing out or damaging the wheel

Question 15

How should aircraft tires be stored?

Answer 15

In a cool, dry place, away from chemicals, oils, or sunlight

Question 16

What is the most important maintenance consideration for aircraft tires?

Answer 16

Ensure they are properly inflated

Question 17

What safety procedure should be followed when inflating tires in general?

Answer 17

Inflate them inside a cage

Question 18

What is the purpose of the anti-skid system?

Answer 18

To bring the airplane to a stop without skidding by providing the most effective braking power

Question 19

What task should be accomplished if the aircraft brakes are spongy?

Answer 19

Brakes need to be bled

Question 20

What are two methods of bleeding brakes?

Answer 20

Gravity method and pressure method

Question 21

When inspecting brakes, what do you look for?

Answer 21

1. Check for leaks while the system is pressurized
2. Check flex hoses for swelling, cracking, or soft spots
3. Check brake pedals for spongy actuation (air in system)
4. Check brake pedals for excessive travel (worn linings)

Question 22

What must you do before disassembling an oleo strut?

Answer 22

Discharge the pressure

Question 23

Where can you find instructions for jacking one wheel of an aircraft to change a tire?

Answer 23

Aircraft maintenance manual