Airframe Systems and Components (Landing Gear)

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 of inspections, and after replacing landing gear components, and after any hard landing.

Question 3

What is used to inflate and 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

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’s designed to prevent nose wheel vibrations or “shimmy” during taxiing, landing, or takeoff.

Question 6

what type of care should be given to landing gear shocks struts?

Answer 6

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

Question 7

What is the effect of underinflated tires?

Answer 7

They are more likely to creep or slip on the wheel when landing or when brakes are applied. Underinflation also causes 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

To prevent air leakage from the tubeless tire used with this wheel.

Question 9

What are the three types of aircraft brake systems?

Answer 9

The independent, power boosted, and the power control type.

Question 10

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

Answer 10

Isolating the emergency brake system from the normal brake system.

Question 11

What component in the landing gear system keeps the landing gear in alignment?

Answer 11

The landing gear torque links.

Question 12

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

Answer 12

Centering cams or external track that straighten the nose wheel before it enters the wheel well.

Question 13

what is used in a split wheel assembly to keep the 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 in 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, oil, or sunlight.

Question 16

What is the most important maintenance consideration for aircraft tires?

Answer 16

Ensuring they are properly inflated.

Question 17

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

Answer 17

They should be inflated inside of a cage whenever possible.

Question 18

What is the purpose of the anti-skid system?

Answer 18

To bring the airplane to a stop without skidding. Providing the most effective breaking power under all types of runway conditions.

Question 19

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

Answer 19

Bleed the brakes.

Question 20

What are two methods of bleeding brakes ?

Answer 20

Gravity and pressure methods

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. This is an indication of air in the system.
4. Check the brake pedals for excessive travel. This is an indication of worn linings.

Question 22

What do you do before disassembling an oleo strut?

Answer 22

Discharge the pressure.