oral prep 2 Flashcards
how many busses are powered when you turn on the BAT switch
2
the battery and hot battery bus
how many batteries are there
2
how many batteries are required
2
with the STBY power switch to auto how many busses are powered
4
Bat and Hot Bat busses
STBY AC and DC busses
EXT PWR switch on how many busses are on
all of them
turn IRS selectors to NAV, what lights come on
-ON DC light comes on for 10 sec
-ALIGN light then turns on
what are you looking for on the status display during preflight
-oil 17 qts
-oxygen ETOPS 1500 non ETOPS 1250
-HYD “RF” not shown
what does RF mean if seen on status hydraulics
Refill
at or below 75%
what position should you put BULK Cargo switch in
-normal unless animals on board then use VENT
(bulk cargo) what does VENT do
warms it up
how do you do a full alignment
-turn off for 3 min
-then select NAV
(IRS) why do we wait 3 min off during alignment
to fully zero out the drift and GS errors
can we do a quick alignment
yes 30 sec but not approved at Omni
is it possible to enter and incorrect IRS position
yes, it will accept it on the 3rd try
what have you lost IRS wise if just the DC FAIL light on
nothing
(IRS) what does ATT do for you
gives you attitude and heading information
(IRS) how do you input heading info
-IRS panel H123
-FMC POS PG
when all IRS’s are aligned what lights are on
none
what powers the YAW DAMPENERS
IRS and hydraulics
what do the EEC’s do
prevent over boost of N1 by reducing fuel flow
how are the EEC’s powered
self powered
what does the RSVR light mean
low hydraulic fluid quantity (less than half)
what provides the Left hydraulic power
the engine driven pump and demand pump
how does the demand pump operate
automatically when it senses low pressure if in AUTO
what is on the LEFT HYD system
-flight controls
-rudder ratio system
-R yaw damper
what is on the right HYD system
-normal brakes
-accumulator
-pitch enhancement system
what does the pitch enhancement system do
uses right sys power with left standby fluid to drive stab trim at 1/4 rate
how is the C demand pump powered
pneumatically from the center duct
how are the C main HYD pumps powered
electrically
what items are on the Center system
-gear/flaps/slats/flight controls
-tail skid
-HDG
-Alternate brakes
-reserve brakes
-RAT
what is the heavy system on the 757
the left system
when does the HDG operate
dual generator failure (loss of all AC power)
how are the cargo doors powered
Ground handling bus
which probe isnt powered on the ground
the TAT
when is the TAT probe powered
after lift off with nose gear extension
what does the rudder ratio sys do
prevents full deflection of rudder at high speeds
when does AIL LOCK OUT start
starts at 240kts and complete at 280kts
what is powering all 3 A/Ps on approach
L-L AC XFER
C-Bat bus
R-R AC XFER
when does the outflow valve close
11,000ft
when do you regain control of the outflow valve
9500ft
can the RAT be retracted
only on the ground by mx
with the ignition in AUTO when does ignition occur
-flaps/slats
-engine anti-ice
where are the TURN OFF lights located on the 757
nose wheel strut
how many fans in the equipment cooling system
2
which autobrake setting is equal to max manual
RTO
