Landing Gear

Question 1

(756, 400, 88, 777) Recall where the brake temperatures are

displayed.

Answer 1

A brake temperature monitor system (BTMS) displays each brake temperature on the EICAS status display (As installed)

Question 2

(756, 400) Recall what a white ISLN light on the RESERVE BRAKES & STRG panel indicates. (767 Only)
(Located on the P-61 accessory panel)

Answer 2

Illuminated (white) – the center number one electric primary hydraulic pump is isolated to provide hydraulic pressure to the reserve brakes and steering system.

Question 3

(756) On the 767 without an HDG, recall what effect a loss of electrical power will have on the normal or alternate gear extension.

Answer 3

With a loss of both AC busses, flight beyond 30 minutes may result in a complete loss of electrical power and the inability
to extend the gear and the flaps by either the normal or
alternate gear extension methods.

Question 4

(756) Identify what a BRAKE SOURCE light indicates.

Answer 4

Illuminated (amber) – both the normal and alternate brake

system pressures are low.

Question 5

(ALL) Recall which brake systems antiskid protection is available in

Answer 5

All brake systems:

Question 6

(756) Recall the different brake systems and their hydraulic sources.

Answer 6

• Normal Brakes
  
  • Right HYD system
• Alternate Brakes
  
  • 757: Left
  • 767: Center
• Reserve Brakes
  
  • 757 Right
  • 767 Center

Note: Accumulator braking is available via the accumulator if adequate pressure is available. The amber band represents accumulator pre-charge only. No brake pressure is available with
the needle in the amber band.

Question 7

(75/76, 777, 400) Recall what the BRAKE SOURCE light indicates

Answer 7

The accumulator is the current source of hydraulic brake pressure.

Question 8

(ALL) (757/767) Recall the conditions required for RTO brake operation.

Answer 8

RTO – automatically applies maximum brake pressure when the thrust levers are retarded to idle above 85 knots and the aircraft is on the ground.

Question 9

(756, 400, 777, NG) Recall the various ways the auto brakes can be disarmed.

Answer 9

be disarmed.
 A fault in the auto brake or antiskid system
 The speedbrake lever is moved from the full up position (ie stowed) after the speedbrakes have deployed on the ground
 Either thrust lever is advanced after landing
 The OFF or DISARM position is selected on the
AUTOBRAKES selector
 Pedal braking is applied

Question 10

(ALL) Recall the conditions required for the AUTOBRAKES to operate

Answer 10

 The normal brake system must be operating. (The auto
brake system also functions on reserve brakes on the 757 only)
 1,2,3,4, or MAX AUTO – must be selected for the desired deceleration rate

Note: To maintain the desired deceleration rate, auto brake pressure is reduced as other controls, such as reverse thrust and
spoilers, contribute to the total deceleration.

Question 11

(756) Explain the meaning of a GEAR light.

Answer 11

Illuminated (amber) – the gear position disagrees with the lever position.

Question 12

(756) Explain the meaning of a DOORS light.

Answer 12

Illuminated (amber) – a gear door is not closed.

Question 13

(756) Explain the meaning of a BRAKE TEMP light.

Answer 13

Illuminated (white) – a wheel brake temperature is in the
high range (a value of 5 or above on the status page).

Question 14

(756) Recall the function of the LOCK OVRD switch.

Answer 14

Push - releases the landing gear lever lock.

Question 15

(756) Explain the meaning of an ANTISKID light on the overhead panel.

Answer 15

Illuminated (amber) – a fault is detected in the antiskid

system.

Question 16

(756) Recall that AUTOBRAKES 1 through MAX AUTO provide a:

Answer 16

Deceleration rate after main gear touchdown.

Question 17

(756) Recall the meaning of an AUTO BRAKES light.

Answer 17

Illuminated (amber) – the auto brakes are disarmed or

inoperative.

Question 18

(756) Recall the meaning of a TAIL SKID light.

Answer 18

Illuminated (amber) – the tailskid position disagrees with the landing gear lever position

Question 19

(756) Understand the function of the parking brake system.

Answer 19

 Pull – sets the parking brake when both brake pedals are simultaneously depressed and illuminates the PARK BRAKE light.
 Release – simultaneously depress both brake pedals to release the brakes. This should also extinguish the
PARK BRAKE light

Question 20

Recall the meaning of the PARK BRAKE light

Answer 20

Illuminated (amber) – the parking brake is set.

Question 21

(756) Know when the ALTN GEAR (alternate gear) extend switch is used

Answer 21

As directed by the QRH in the event that
- (757 – Left) or
- (767 – Center)
hydraulic system pressure is lost.

Question 22

(756) Recall what braking setting provides the quickest deceleration rate

Answer 22

Full manual braking