Study Guide: Landing Gear

Question 1

757/767: Inflight and ground operation of various aircraft systems are controlled by the air/ground sensing system and the nose air/ground sensing systems. They receive logic
signals from:

Answer 1

Tilt sensors located on each main landing gear and nose gear strut compression
sensors

Question 2

757/767: With the rejected takeoff (RTO) mode armed, the autobrake system applies maximum braking when:

Answer 2

Both thrust levers are retarded to idle above 85 knots

Question 3

763: The alternate landing gear extension system uses _______ to trip the locking mechanism for each gear.

Answer 3

An electric motor

Question 4

753/767: The TAILSKID light illuminates and the EICAS advisory message TAILSKID displays when:

Answer 4

The tailskid position disagrees with the landing gear lever position

Question 5

757/763: The landing gear lever is placed in the OFF position to:

Answer 5

Depressurize the landing gear system

Question 6

757/767: The ______________ if the RESERVE BRAKES (757), or RESERVE BKS & STRG (767) is selected and pressure is available.

Answer 6

BRAKE SOURCE light and EICAS message extinguish

Question 7

757: When the RESERVE BRAKES switch is activated, fluid from ___________ is made available for reserve brakes operation.

Answer 7

Below a standpipe in the right hydraulic system

Question 8

757/767: Limited steering control is available through the rudder pedals, allowing turns up to ____ in either direction.

Answer 8

7°

Question 9

757/767: The normal brake system is powered by the ______ hydraulic system.

Answer 9

Right

Question 10

757/767: The alternate brake system has all the capabilities of the normal brake system
except for _________, which requires that the normal antiskid system is operating.

Answer 10

Automatic braking

Question 11

757/767: The BRAKE SOURCE light illuminates and the corresponding EICAS message displays if:

Answer 11

Both the normal and alternate brake system pressures are low

Question 12

757/767: The autobrake system disarms immediately without pilot input when:

Answer 12

An autobrake or normal antiskid system fault occurs

Question 13

767: The alternate brake system is powered by the ________ hydraulic system.

Answer 13

Center

Question 14

767: When the RESERVE BRAKES & STRG switch is activated, fluid from the ___________ is made available for reserve brakes operation.

Answer 14

The center hydraulic system reservoir

Question 15

764: The alternate landing gear extension system uses ________ to release all door and
gear uplocks, and allow the landing gear to free-fall to the down and locked position.

Answer 15

An electric hydraulic pump

Question 16

757: A white BRAKE TEMP light indicates a relative brake temperature of ____ or
greater exists on one or more brakes.

Answer 16

5

Question 17

757/767: The tiller can turn the nose wheel up to ____ in either direction.

Answer 17

65°

Question 18

757: In the event of a total electrical failure, the landing gear can be extended:

Answer 18

By using normal gear extension

Question 19

757/767: When using the alternate brake system, what antiskid protection is provided?

Answer 19

Alternate (paired wheel) antiskid

Question 20

764: If any brake temperature is ____ or more, a BRAKE TEMP EICAS message displays.

Answer 20

5.0

Question 21

757/767: According to the graphic, the AUTO BRAKES light is illuminated because:

Answer 21

The autobrake system is disarmed or inoperative

Question 22

757/763: The PARK BRAKE light illumination on the pedestal indicates that:

Answer 22

The parking brake handle is not stowed

Question 23

757: When the RESERVE BRAKES switch is activated, fluid trapped below a standpipe in the right hydraulic system reservoir is made available to the _________.

Answer 23

Right system electric hydraulic pump