400 questions good luck Flashcards
how many gallons of HYD fluid in A vs B
A = 4.7 us gallons B = 7.2 us gallons
if there is a leak in the engine driven A pump how much fluid will be left?
what about the electric?
22% left for the electric driven pump
outta luck butter cup nothing left
if the #1 engine RPM fails below 56%, gear is not up and commanded up, what happens
the LGTU operates from the b system to raise the gear
if a leak occurs in the B system engine HYD pump what happens?
what about the electric pump?
the fluid will drain to the top of the engine driven HYD pump stand pipe leaving about 40%
it leaks to the top of the electric pump standpipe which is about empty but enough fluid is left over for the PTU
if the standby HYD system has a leak how much will the B reseivor decrease to?
64%
if either flight control switch is not in the STBY RUD position and the ALT Flaps switch is not in the arm position, the stand by system will do what?
the standby system will auto shut off when the flaps are retracted in flight
with the Loss of A and B HYD what flight controls are powered and how?
Ailerons and elevators thru manual reversion and the rudder is via the standby system
how many flight spoilers do we have? what HYD system power which ones?
4 // the inboard flight spoilers via the A system and the outboard via the B system
how many ground spoilers are there?
3
if the B system is completly inop what provides pressure to the leading edge devices?
the stand by system
are the rudder pressure reducer (RDR) and the rudder pressure limiter (RDL) the same thing ?
yes, the RDR is on the a system and RDL is on the B system
both limit the hydraulic pressure to the rudder when full rudder is not required
when is rudder pressure reduced?
it is reduced at 1000agl and remains reduced until descending below 700ft agl
it also makes the ailerons and flight spoilers more effective in the event that the more counter active force is needed
when will the rudder pressure return to normal
loss of system B
a difference in N1 between the thrust levers that exceeds more than 45%
if the RPR fails to come back on descending trough 700RA what happens?
the FLT control low pressure limit is illuminated and the standby sytem will activate, open standby rudder valve power the standby PCU
a runaway trim can be caused by?
uncommanded operation of the main electric trim
uncommanded operation of the autopilot trim system
or a failure of the brake portions of the main and autopilot trim systems, which allow stabillizer float