Back of book questions Flashcards
What would cause a PACK INOP light to illuminate?
Any of the following:
1) High pack outlet temp
2) Pack controller malfunction
3) High compressor outlet temperature
TO conditions require that the packs be turned off. Is there any way to get air moving though the cabin?
Yes, the recirculation fans will move the air in the cabin.
The Right pack outlet temperature is too high. What happens?
The R pack INOP light illuminates and it is set to produce maximum cooling
What temperature will the pack produce if it is set to STBY N?
The pack will produce a constant moderate temp.
What happens if the Master Trim Air Switch is placed to off?
The packs will try to maintain a constant temp of 24C or 75F in the cabin
A zone temperature INOP light is illuminated. What could cause this?
Any of the following; 1- excessive air temp 2- cabin temp controller fault 3- trim air switch off 4- Zone switch off
What can cause a Recirc fan INOP light to illuminate?
Any of the following;
1- The fan fails when the switch is ON
2- The fan switch is OFF
3- A utility bus load shed for the right fan
4- Pushing a cargo fire arm switch
5- Smoke is detected in the forward electronic equipment area
How many air temp control zones are there on the b757?
three
The left recirc fan INOP light is illuminated. What can the ALTN switch do?
It can open the overboard exhaust valve if it did not already do so when the left recirc fan turned off
What is the source of head for the aft cargo compartment? What about the fwd cargo compartment?
Any of the following;
1- and electric heater
2- passenger compartment discharge air
What are the control settings required for automatic control of the pressurization system?
AUTO 1 or AUTO 2 is selected. Set the desired AUTO RATE. Set the LDG altitude
When does the cabin Alt light illuminate?
At 10,000ft MSL
What is the Auto Rate limit for climb and descent when the auto rate knob is set at the index mark?
Climb- 500ft per minute
Descent- 300ft per minute
What is the maximum normal differential pressure?
8.6psi
When is the the outflow valve automatically closed?
When the cabin altitude reaches 11,000ft.
What would cause the AUTO INOP light to illuminate?
When both AUTO 1 and AUTO are inop or the pressurization controller selector is in MANUAL
During a climb, what determines what the cabin altitude rate of change should be?
The rate is proportional to the AC’s vertical speed
Does the outflow valve actuator use AC or DC power?
AC power for automatic, and DC power for manual operation
Is the alternate auto controller ever tested?
Yes, it goes through a self-test after landing
Your destination is Denver. The landing altitude has been set above the scheduled cabin altitude. What happens?
The cabin altitude climbs at one half of the auto rate setting to the landing elevation, since it is higher than the cabin altitude.
During TO, when does the THR hold mode engage?
80kts
What is the pitch mode when you engage the first autopilot with neither flight director on?
vertical speed
When does the go-around mode arm for the AFDS and autothrottle system?
Either at glide slope capture or when the flaps are out of UP
You are executing a missed approach. What verticle speed is held by the autopilot?
2,000ft/minute minimum
The AC is below 400ft. The go-around mode is engaged. What do you have to do to deactivate the go-around mode?
Disengage the autopilot, the autothrottle, and turn off both flight directors.
Does the bank limit selector affects all modes?
No, only affects HDG SEL mode
The flight director is on. However, the command bars are out of view. What does this indicate?
The flight director is not supplying valid commands
What is the significance of an ‘EPR’ display on both ADIs?
The autothrottle system has entered the EPR mode
During TO, the autothrottle is engaged. The a/t stops moving the throttle and one of them is below the takeoff value. Will the autothrottle system adjust that throttle?
No, you have to manually set that throttle
The left autopilot is in CMD. What modes will the fligh director use?
Same mode as the engaged autopilot
How do you verify the operation of the oxygen mask microphone?
Listen for the sound of oxygen flow in the flight interphone system
What does the VHF TFR switch do?
Use it to select the VHR communications frequency.
What station can be connected through the service interphone system?
All ground crew, the cockpit, and all cabin crew locations.
What stations can be connected through the flight interphone system?
All flight crew and ground personnel at the nose gear station
What is required in order to erase the cockpit voice recorder?
The following conditions must be met:
1- Aircraft on ground
2- parking break set
3- hold the erase button for at least 10secs
What activates the flight recorder?
Either engine running, or in flight if electrical power is available
What causes the standby power bus OFF light to illuminate?
loss of power to either the standby AC or DC bus
What causes the the Generator Drive Light to illuminate?
Either high oil temperature or low oil pressure
What normally powers the batter bus in cruise?
the left DC bus
What has priority in supplying the ground handling bus?
External power
The APU is supplying both electrical and pneumatics. What happens when the first engine is started?
both utility buses trip off
Does the bus tie system parallel the engine generators?
no
What has the highest priority on the left main AC bus?
the left engine driven generator
What happens when a single fault is detected during a test of the engine fire detection system?
The system configures the affected engine for single loop operation.
How is a loop fault indicated?
EICAS status message
How many fire detectors are there in each cargo compartment?
two smoke detector in each.
What happens when you pull the Engine Fire switch?
All of the following;
1- Engine and spar fuel valve close
2- thrust reverser is deactivated
3- The engine drive hydraulic pump is depressurized and the supply valve at the wing is closed.
4- the generator field is opened, which opens the breaker
5- Ignition is de-energized
6- the engine bleed valve is closed, and the APU bleed on the left Fire switch
a fire is indicated in the left engine. You reach to pull out the left engine fire handle, but it will not move. What should you do?
Push the fire override switch and pull the handle
What happens when you rotate the engine fire switch to the stop?
The selected fire extinguisher bottle is discharged
what happens when the APU fire switch is pulled?
the APU will immediately shutdown if it is running
What does pushing the forward cargo compartment extinguisher arming switch do?
All of the following;
1- arm the fire extinguisher squibs for the selected compartment
2- silences the fire warning bell
3- shuts off the right recirc fan, and right pack goes to high flow
4- shuts off the left recirc fan, the R pack goes to high flow, and the over board exhaust valve opens
Why are there two switches for the aileron trim?
one switch arms the trim system, the other switch determines the direction
which rudder actuator is automatically depressurized when the rudder ratio light illuminates?
the left rudder actuator
what is the electric stabilizer trim rate when the stab trim light is illuminated?
half the full rate
what is required for a successful yaw damper test?
hydraulic power and an IRS aligned
what does an illuminated ‘UNSCHED STAB TRIM’ light indicate?
An uncommanded stabilizer movement, or the autopilot is moving opposite to which it was commanded.
what is displayed in the main tank indicator during the fuel quantity test?
88.8
the APU is powering the AC. Which pump is supplying fuel to the APU?
left forward fuel pump
When does the DC fuel boost pump automatically start?
When the APU is started with battery power only.
Where does the total fuel value comes from?
from the fuel quantity processor
The APU is running on the ground. Can you turn off the left forward fuel pump?
No, there is an override circuit which keeps the pump operating
Can the ram air turbine be retracted once it has been deployed?
no
What happens to the hydraulic system when you pull an engine fire handle?
It closes the engine hydraulic pump supply valve at the top of the strut and it depressurizes the engine pump
which hydraulic system flight controls are powered by the RAT?
the center
lowest airspeed at which the RAT can provide adequate power to operate the flight controls?
130kts
How can you tell the RAT is producing hydraulic pressure?
the RAT pressure light illuminates
which hydraulic system has a volume of fluid dedicated to the reserve brake?
Right
Can the RAT automatically deploy
yes, if both engines fail at above 80kts
what will cause the PTU to operate?
left engine failure or low pressure from the left engine hydraulic pump
what can the PTU power?
the flaps, the slats, the landing gear, and the nose wheel steering
when does the probe heat operate?
automatically when any engine is running
which windows are anti-fogged by conditioned air?
Captain and FO’s windows
how are the engine anti-ice valve controlled?
electrically controlled and pneumatically actuated
which instrument source select panel switch should be selected to alternate if an ADI and HSI lose their displays?
EFI switch
How long does it take the IRS to align?
ten minutes
What is the steering authority with the nose steering tiller?
65 degrees left or right of center
the auto brakes are armed for landing. When do the auto brakes actuate?
When all of the following are met:
1- both levers are at idle
2- wheel spin up occurs
3- wheel until is sensed (?)
Which hydraulic system powers the normal brake system?
right
which hydraulic system pressurizes the landing gear?
left
Is auto brake availible in the alternate brake system?
no
what is the minimum width for a 180 degree turn?
120ft
What is an indication that the auto brake system is armed and functional?
The selector latches at the deceleration you selected
When does the pax o2 system automatically deply?
when the cabin altitude reaches 14,000ft
What does an illuminated BLEED light mean?
An engine bleed air over temp
The left DUCK LEAK light is illuminated. When will it extinguish?
when the temperature along the pneumatic duct cools
What is the meaning of an illuminated left or right DUCK LEAK light?
a wing pneumatic leak
What happens if low pressure air is insufficient for pneumatic system operation?
The high pressure bleed valve opens
How many ground pneumatic carts are recommended for engine start?
two
What does the APU fault light mean?
the APU valve is in transit or an APU fault
What is the minimum req to start the APU
An APU battery and a main battery
What happens if the APU fault light illuminates while the APU is running?
The APU shuts down immediately
What happens when you close the fuel control switch?
it closes the engine and spar valve, and de-energizes the ignition
When should the engine start selector automatically move to AUTO?
50% n2
How does the standby engine indicator operate with the selector in AUTO?
Any of the following:
1) both EICAS computer must fail
2) loss of AC power
3) one EICAS screen availible on the ground and the STATUS button is pushed
When are warnings inhibited during takeoff?
At rotation. it lasts for 20secs or 400ft radio altimeter whichever comes first
