Landing Gear/Brakes Flashcards
(757) What system uses the alternate landing gear extension?
A dedicated DC powered electric hydraulic pump
(757) What occurs if the Reserve Brakes switch is selected?
Allows use of reserve right hydraulic fluid, activates right
electric hydraulic pump and isolates the right electric
hydraulic pump power to the normal brake system
(757) Which hydraulic system powers normal brakes?
Right
(757) What is the active brake system following a SYS PRESS light and a R HYD SYS
PRESS EICAS message?
Alternate brakes
(767) What does an L or R DRAG BRACE EICAS message indicate?
Main gear drag brace is not locked down
(767) Which hydraulic system powers the normal brakes?
Right
What does the BRAKE SOURCE light and EICAS message indicate?
Normal and alternate brake system pressure low
What does a GEAR DISAGREE light and EICAS message indicate?
Gear disagrees with lever position
What type of braking is available if normal/reserve and alternate brake hydraulic
power is lost?
Accumulator braking
Which brake system(s) is/are provided with antiskid protection?
Normal/reserve and alternate brake hydraulic systems
What is accomplished by positioning the gear lever OFF?
Depressurizes landing gear system
Which one of the following indicates the auto brakes system is operative?
AUTO BRAKES light extinguished
Which of the following provides the maximum braking pressure?
RTO initiated above 85 knots
If the auto brakes system is not disarmed by the pilot, down to what speed will the
system provide automatic braking?
Complete stop
(757) What are the auto brake and antiskid differences as it relates to alternate
brakes?
No auto brakes and laterally paired wheel antiskid
(757) How does the alternate gear extension system operate?
Signals a small electric hydraulic pump to release the
uplocks using trapped left hydraulic system fluid
(767) What occurs after selecting the Reserve Brakes and Steering switch?
Provides reserve hydraulic fluid to the center number
one (1) electric hydraulic pump regardless of pump
switch position and pump pressure is then supplied
exclusively to the alternate brake system and nosewheel
steering system
(767) What is the active brake system following a SYS PRESS light and a R HYD SYS
PRESS EICAS message?
Alternate brakes powered from the center hydraulic
system
(767) How does the alternate gear extension system operate?
An electric motor is used to trip the locking mechanism
for each gear
(767) What number activates the BRAKE TEMP light?
5 or greater
