Landing Gear & Brakes

Question 1

Landing gear

Answer 1

• Electrically activated

- Hydraulically actuated

Question 2

Air/Ground position system has?

Answer 2

• 6 wow (weight on wheels) proximity sensors (2 on each landing gear)

Question 3

Down/Up lock sensors

Answer 3

• 12 sensors (2 up & 2 Down on each landing gear
• Held up by mechanical unlocks
• Held down by spring-type downlocks

Question 4

Gear retraction done?

Answer 4

• Via gear handle on instrument panel
• Electric signal sent to hydraulic system
• Hydraulic pressure retracts gear

Question 5

Ways to extend gear?

Answer 5

• 3 ways
• normal way
• Electric over ride
• Free fall

Question 6

How many brake wear pins?

Answer 6

• 4 located on each main wheel

- When pin is flush, maintenance must be notified for a brake change

Question 7

How can a pilot verify adequate pressure when emergency parking brake is set?

Answer 7

• The Emerg/Prkg brake light (below the auto brake knob)

Question 8

Landing gear electrical override switch does?

Answer 8

• Bypasses gear sensor and evaluates computers, and commands a hydraulically actuated gear extension

Question 9

Nose wheel can turn up to at low speeds?

Answer 9

• 76 Degrees

Question 10

How much can the rudder pedals steer the nose wheel?

Answer 10

• Left or right up to 7 Degrees

Question 11

Pilot can verify steering is off by?

Answer 11

STEER OFF message on the EICAS

Question 12

When do auto brakes start to release braking?

Answer 12

• When the brake pedals are pressed (more than 20%)

Question 13

Assists in landing gear extension and retraction? (Engine 2 pump fail)

Answer 13

PTU