Landing Gear and Brakes

Question 1

Describe the mechanism that locks the MLG and NLG in the down position

Answer 1

MLG - Locking Ring internal to the actuator

NLG - Over- centered Spring loaded Locking Stay Mechanism

Question 2

What action unlocks the MLG and NLG during retraction

Answer 2

MLG- Hydraulic Pressure applied to the retract side of the actuator

NLG- Hydraulic Pressure applied to the Down-lock Release Actuator releases the Locking Stay Mechanism

Question 3

Describe the Mechanism that locks the MLG and NLG in the up position

Answer 3

MLG and NLG, Hook attached to the Uplock Box.

Question 4

What action unlocks the MLG and NLG during extension

Answer 4

MLG and NLG: Hydraulic pressure applied to Uplock Box Release Actuator

Question 5

What actions occur when the Gear Emergency Extension Handle is pulled

Answer 5

1) Uplock Box Hooks are mechanically released
2) Hydraulic Fluid in all landing gear lines is opened to Hydraulic Return
3) Landing Gear extends to the locked position through gravity and aerodynamic force

Question 6

What criteria must be met to trigger the gear aural warning with the flaps in UP, 1 or 2 position?

Answer 6

At least ONE landing gear NOT down and ALL of the following:

1) Altitude less than 700 LFE or 700AGL
2) Airspeed less than 160 KTS
3) One TLA less than 26 deg and the other less than 40deg (All engines operating)
4) TLA less than 40 deg (OEI)

Question 7

What criteria must be met to trigger the gear aural warning with the flaps in 3 or FULL position

Answer 7

At least one landing gear NOT down regardless of altitude, airspeed or TLA.

Question 8

Under what conditions can the gear aural warning not be silenced

Answer 8

Flaps 3 or FULL position

Question 9

What types of Brake/ Wheel protection are provided by the Brake Control Unit?

Answer 9

1) Anti- Skid
2) Anti- Lock
3) Touchdown Protection
4) Retraction Braking
5) Integrated Built in Test

Question 10

Is Anti- skid protection available when using the Emergency Brake handle

Answer 10

No

Question 11

Can the Emergency/ Parking Brake accumulator be charged without system pressure

Answer 11

No

Question 12

How many parking brake applications are available with a full accumulator charge

Answer 12

Six

Question 13

What is the minimum required cooling off period following an aborted takeoff or landing above the quick turn around weight

Answer 13

20 mins

Question 14

Reference the the source for brake cooling periods

Answer 14

POH Vol 2 - Performance

Question 15

When do you get a LG LEVER DISAG (CAS)

Answer 15

If after 30 seconds of moving the gear handle up or down all three gear do not agree.