ACS Landing Gear & Brake Systems

Question 1

What is the primary purpose of an oleo strut in aircraft landing gear?

Accepted Answer

To absorb landing shock through hydraulic fluid and compressed nitrogen

Answer

To steer the nose wheel

Answer

To lock the gear in the retracted position

Answer

To provide electrical bonding between the gear and airframe

Question 2

When servicing an oleo strut, the correct fluid level is verified by:

Accepted Answer

Deflating the strut fully, adding fluid to the specified level, then re-inflating with nitrogen

Answer

Checking the fluid reservoir sight glass

Answer

Using a pressure gauge on the Schrader valve

Answer

Measuring strut extension with a ruler only

Question 3

Which type of brake system uses a single-disc design with one puck-style actuating cylinder on each side?

Accepted Answer

Single-disc floating caliper brake

Answer

Expander tube brake

Answer

Multiple-disc brake

Answer

Segmented rotor brake

Question 4

What causes brake fade on aircraft disc brakes during repeated hard stops?

Accepted Answer

Excessive heat buildup reducing friction between pads and disc

Answer

Low hydraulic fluid viscosity

Answer

Air in the brake lines

Answer

Worn brake pressure seals

Question 5

The minimum allowable disc thickness for aircraft brakes is specified in the:

Accepted Answer

Component Maintenance Manual or Aircraft Maintenance Manual

Answer

FAR Part 23

Answer

Aircraft Type Certificate Data Sheet

Answer

AC 43.13-1B only

Question 6

What is the function of the torque links (scissors) on a nose gear oleo strut?

Accepted Answer

To prevent strut rotation while allowing vertical movement

Answer

To limit strut extension travel

Answer

To connect the steering actuator to the wheel

Answer

To provide shimmy dampening