Tough Questions Flashcards
What are the 11 components of the hydraulic system A?
(A REAL GIANT P)
- Autopilot A
- Rudder
- Elevator and feel
- Ailerons
- Landging gear
- Ground spoilers
- Inboard spoilers
- Alternate brakes
- Normal nose wheel steering
- Thrust Reverser No1
- PTU
System annunciator panel cover what?
- Aft, Fwd, fire control
Where is the Air starter located?
IGD N2 shaft
Cross bus tie in normal?
Closed and in auto
GEN OFF BUS?
IDG not supplying to RELATED transfer bus
WS1.Whats does the PSEU caption indicate, Will it illuminate in flight?(3)
- T/O config, LND config, LND gear, Air/ground sensing.
- Overwing exit fails to disengage lock
- Inhibited from TL advance to 30’ seconds after landing.
What happens if a DEU fails in AUTO?
‘DISPLAY SOURCE’ amber caption in flight
‘CDS FAULT’ (Common Display Fault) on ground, not dispatchable Either EEC will drop into ‘ALTN’
Some Hyd & FF indications will occult
Which is the primary FCC?
Switches with MA switch
What does RNP enable the aircraft to do?
- Allows the aircraft to fly between defined points in space
What is actual navigation performance?
- It is the FMC’s estimated max position error with a 95% probability. It means that the FMC is 95% certain that the aircrafts actual position lies within a circle with a radius if the ANP value around the FMC position.
When does an amber ‘ENG FAIL’ show on the EGT gauge?
<50% N2 and eng start lever (ESL) at idle detent
If a secondary engine limit is exceeded in flight how is the crew notified?
The blanked lower DU will come up, individual warnings are then displayed on each parameter, either in red, amber or contrast inverted
If hyd A or B fail with the associated REV deploy?
Yes, but a t reduced speed (circa 50% slower than norma via stby hyd)
When is STBY PWR activated in AUTO?
AC trans BUS 1 and DC BUS 1 lose power
What are norm and stby power supplies for the stby AC BUS?
Normal from AC trans BUS 1
Stby from the static inverter from the battery
During cruise where is the CTBR?
Closed
What could cause BLEED TRIP OFF, how to restore?
Overtemp or over pressure, iaw the QRH press the trip reset
Which duct is external (pneumatic) air connected?
The right bleed air manifold (don’t confuse with pre conditioned air)
What is the thrust limit with DUAL BLEED on and why?
Not above idle on the engines to avoid over back pressure damaging the APU
With bleed off what do engine and wing TAI do?
Engine TAI stays on, wing TAI goes off
EDP on system B (right engine) springs a leak, how is system preserved?
It isnt, both EDP B and EMDP B feed from the same stand pipe so system B will run dry with a down stream leak in either.
However. There is a stand pipe in hyd resevoir B to preserve fluid for the PTU.
Do mechanical controls from both control wheels attach to the same thing?
No, Capt’s roll is connected to ailerons, FOs to spoilers, both wheels connected together. If there’s a jam on one side the other respective control surfaces will move. (but NB spoilers always need hyd A or B pressure)
FEEL DIFF PRESS?
Comes on with 30 sec of differential (>25%) between hyd A and B pressure. Will come on and cause a MC 30 secs after you swx on the ELEC 1 hyd pump pre start (as the ELEC 2 remains off until bypass pin confirmed)
How are STS and mach trim controlled?
By the AP FCCs, even if AP not engaged
What is the function of the stab trim override swx on the aft electrics panel?
Reverse electric trim is inhibited (ie cant trim up while pressing forward), this override switch allows reverse trim (should someone slump fwd on the controls allows the other person to trim back)
When does electric and AP trim speed change?
Flap not up = hi speed
Flap up = low speed
What does auto slat do in ref to a stall?
Any time the LE slats are extended (1/2) and approaching stall is detected they are moved to fully extended
(SPF this is in flap 1-25)
(Non SPF this is in flap 1-5)
What happens when you select alt flap to ARM?
Closes TE flap bypass valve, activates stby hyd pump and arms the alt flap swx
Normal LVP criteria?
200ft ceiling and 800m RVR
What are the criteria for the LGTU to work?
- Airborne
- no 1 eng fail
- gear handle up
- EITHER main leg not locked up
Is anti-skid available with altn or accumulator braking
Yes, but works on pairs of wheels on altn. Reverts to individual wheels with accumulator as it is back through the normal (hyd B) valves
When do auto brakes come on?
Both TLs at closed and main wheels >60 kts
What causes a COWL ANTI ICE amber?
Overpressure only
What happens if you select wing TAI on the gnd?
Slat temp is monitored to prevent overheating, the TAI will cycle on and off to maintain temp and the blue valve lights will switch bright to dim and cycle
Selecting eng TAI off, the valve stays bright blue, what does this mean?
Valve not shut, if >10 deg TAT limit that engine to 80% N1 if possible
