Engines and APU Flashcards
lnflight, the EEC selects approach idle if:
A. Flaps are 25 or greater
B. Engine anti-ice is on.
C. Landing gear is selected down.
D. All the above
D. All the above
The Autostart system monitors ___ during a ground start.
A. Compressor stalls.
B. Fuel flow.
C. Oil pressure.
D. A and C are correct
D. A and C are correct
How will a low oil quantity condition be displayed on EICAS?
• Reverses the display to show black numbers on a white background.
• Amber indication when minimum oil quantity is reached.
• Oil quantity indicator will change to red.
• Oil quantity indicator will not change unless oil pressure drops.
• Reverses the display to show black numbers on a white background.
Which of the following engine parameters is not monitored by the autostart system during engine start?
• Hot start
• No N1 rotation
• Hung start
• High oil temperature
• High oil temperature
The reverse thrust levers can be raised only when:
A. The autothrottles are disengaged.
B. Below 100 kts.
C. On the ground with the forward thrust levers in the idle position.
D. None of the above.
C. On the ground with the forward thrust levers in the idle position.
The APU is operating in the attended mode when:
A. Either engine is starting.
B. Either engine is running.
C. The aircraft is in flight.
D. All the above.
D. All the above.
The engine autostart system will make three start attempts before aborting the engine start sequence when:
A. In the air.
B. On the ground.
C. Both on the ground or airborne.
D. The starter is used for an inflight start.
B. On the ground.
Maximum rated thrust is available in any phase of flight by moving the thrust levers to the full forward position. The ____ provides N1 and N2 overspeed protection.
• EEC
• CDU
• Autostart System
• RPM limiter
• EEC
On the ground, the engine autostart system will not attempt a second start after which of the following malfunctions?
A. No N1 rotation.
B. No oil pressure rise
C. Loss of both starter/generators
D. All the above
D. All the above
During engine start, placing a start/ignition selector to START ___.
• Opens the spar fuel valves.
• Opens the spar and engine fuel valves.
• Opens the engine fuel valve only.
• Arms the spar fuel valve.
• Opens the spar fuel valves.
With the EEC switch in the ALTN position, thrust is set using:
• N2 as the controlling parameter.
• EGT as the controlling parameter.
• N1 as the controlling parameter.
• The charted EGT limit.
• N1 as the controlling parameter.
While operating in the ATTENDED mode, the APU will not shut down for:
• An overspeed.
• APU controller failure.
• Speed droop.
• High EGT.
• High EGT.
Moving the FUEL CONTROL switch to the OFF position will close the fuel valves, removes igniter power and:
• Unlocks the fire switch.
• Disarms the EEC.
• Locks the start valve closed.
• Resets locked EICAS messages.
• Unlocks the fire switch.
The GEnX engines are rated at:
• 70,000 lbs T/O thrust.
• 85,000 lbs T/O thrust.
• 75,000 lbs T/O thrust.
• 90,000 lbs T/O thrust
• 70,000 lbs T/O thrust.
If the N2 red line is exceeded, the red color around the digital indication can be reset to white (if the exceeded parameter has returned to normal) by pushing:
A. TO/GA.
B. The Cancel/Recall switch.
C. The Autothrottle disconnect switch.
D. None of the above.
B. The Cancel/Recall switch.
The EEC provides _____ overspeed protection.
A. N1 only
B. N2 only
C. N1 and N2
D. None of the above.
C. N1 and N2
Both engine igniters operate continuously when the:
A. Engine anti-ice is selected.
B. Ignition switch is placed to continuous.
C. Fuel control switch is in run and engine speed decays to below idle. D. Both A and B.
C. Fuel control switch is in run and engine speed decays to below idle.
What effect will the thrust ramping feature have when setting T/O thrust levels?
• Command T/O thrust will be reached within 5 seconds of selecting TO/GA
• May cause noticeable autothrottle stagger.
• Increases potential for compressor stalls
• Maximum T/O thrust may not be reached until 65 kts lAS
• Maximum T/O thrust may not be reached until 65 kts lAS
Which statement is correct regarding APU operation?
A. The APU supplies electrical power and bleed air on the ground and only
electrical power in flight.
B. Electrical power is available when at or below 43,100 ft.
C. Bleed air is available at or below 22,000 ft and electrical power is available to 43,100 ft.
D. None of the above.
B. Electrical power is available when at or below 43,100 ft.
Which statement(s) are true of the Thrust Reverser System? A. Each engine has a pneumatically powered fan air thrust reverser. B. When the reverse thrust levers are moved aft to the interlock position, the autothrottles disengage and the auto speedbrakes deploy (if not armed). C. Pushing the reverse thrust levers to the full down position retracts the reversers to the stowed and locked position.
D. Both B and C.
Which of the following is true about the EEC Alternate mode?
A. Thrust Limit protection is not provided.
B. N1 reference and target values are computed by the FMC.
C. N1 and N2 overspeed protection is available.
D. All the above.
D. All the above.
What does the “APU LIMIT” EICAS message
• An APU limit has been exceeded.
• The APU is out of fuel.
• The APU has automatically shut down.
• The APU pneumatic output is limited.
• An APU limit has been exceeded.
What thrust reference mode provides maximum rated takeoff thrust?
• TO 1
• TO
• D-TO 1
• D-TO
• TO
During cruise flight with the EECs operating in the normal mode, you manually position the thrust levers to the full forward position. What will happen?
• The engines will exceed the maximum thrust limit.
• The engines will produce maximum cruise thrust.
• The engines will produce maximum available thrust.
• The EEC alternate mode will automatically engage.
• The engines will produce maximum available thrust.
Which statement is TRUE concerning the alternate EEC mode?
• In the hard alternate mode, the EEC uses N2 as the controlling parameter.
• Engine thrust limit protection is provided in both the normal and hard alternate modes.
• Overspeed protection is not available in the hard alternate mode.
• If a fault occurs in the normal mode, control is automatically transferred to the alternate mode.
• If a fault occurs in the normal mode, control is automatically transferred to the alternate mode.
Thrust control malfunction accommodation protects against idle thrust asymmetry conditions while on the ground.
A. True
B. False
A. True
In normal mode, the EEC sets thrust by controlling N1 based on thrust lever position.
A. True
B. False
A. True
In the attended mode, which of the following faults do NOT cause the APU to shut down Immediately?
• APU fire / inlet overtemperature.
• Overspeed / loss of overspeed protection.
• APU controller failure.
• High EGT, High Oil Temperature, Low Oil Pressure.
• High EGT, High Oil Temperature, Low Oil Pressure.
How many starters are available to start the APU?
• Two, electric and pneumatic. The pneumatic is preferred if available.
• Three, 2 electric and 1 pneumatic. The pneumatic is a backup only.
• Two, electric only.
• One, electric only.
• Two, electric only.
Under what condition(s) will the APU start automatically?
A. Loss of three or more starter generators.
B. Loss of two starter generators.
C. Loss of both packs.
D. Loss of all displays
A. Loss of three or more starter generators.
When does the APU FAULT light illuminate?
A. APU fire
B. Momentarily during start cycle self test.
C. APU shutdown due to fault.
D. All of the above.
D. All of the above
When is the APU operating in the unattended mode?
A. On the ground, no engines starting or running.
B. Anytime the aircraft is on the ground.
C. In flight, no engines running or starting.
D. Both A and C are correct.
A. On the ground, no engines starting or running.
The secondary engine instruments can be displayed by pushing either secondary engine display switch (ENG on the display select panel).
A. True
B. False
A. True
What are the modes of operation of the EEC, and what are the differences in protection available?
• Normal and Alternate. There is no overspeed or overboost protection in the Alternate mode.
• Normal and Alternate. There is no overboost protection in the Alternate mode.
• Normal and Secondary. There is no overboost protection in the Secondary mode.
• Normal and Non-normal. There is no overboost protection in the Non-normal mode.
• Normal and Alternate. There is no overboost protection in the Alternate mode.
Thrust Asymmetry Protection (TAP) is only available when:
A. the flight controls are operating in the Normal mode.
B. above 70kts and elevator trim is in the forward green band.
C. the EEC is in the normal or alternate mode.
D. Both A and C
D. Both A and C
Can both engines be started simultaneously?
• Yes, with at least two external power sources available
• No
• Yes, if using APU as power source
• Yes, if field elevation does not exceed 5,200 ft.
• Yes, if using APU as power source
During takeoff, an engine failure may generate a time critical warning which will consist of the following:
A. An aural warning “Engine Fail”.
B. Illumination of the Master Warning lights.
C. A PFD warning message of ENG FAIL.
D. All of the above.
D. All of the above.
The minimum APU oil quantity needed for start is_ quarts.
A. 12
B. 10
C. 8
D. No required minimum quantity.
D. No required minimum quantity.
During single engine T/O or Go-Around, TAP may reduce thrust on the operating engine to maintain the required climb performance.
A. True
B. False
A. True
The APU battery is designed to support __ consecutive start attempts.
•2
•3
•4
•5
•2
The APU is designed to be started with no fuel pumps operating in flight at altitudes up to _____ ft.
• 43,100
• 14,000
• 10,000
• 22,000
• 14,000
Starting both engines simultaneously reduces the a/c pack (CAC) restart time.
A. True
B. False
A. True
When inflight with an engine failure, the Autostart system will attempt _____.
• unlimited continuous restarts
• 3 restarts in one hour
• continuous restarts only if the aircraft is below 18,000 ft.
• continuous restarts until the starter duty cycle is reached
• unlimited continuous restarts
What are the flight deck indications of a bowed rotor start?
• Engine high EGT.
• Fuel Flow may fluctuate.
• Autostart aborts the start.
• Elevated VIB (vibration) values are observed (N1, N2, or BB) or engine vibrations are felt during the What are the flight deck indications of a bowed rotor start?
• Engine high EGT.
• Fuel Flow may fluctuate.
• Autostart aborts the start.
• Elevated VIB (vibration) values are observed (N1, N2, or BB) or engine vibrations are felt during the start.
• Elevated VIB (vibration) values are observed (N1, N2, or BB) or engine vibrations are felt during the start.
Thrust ramping due to high stress on engine fan blades under what conditions?
A. Crosswinds at low groundspeed.
B. High altitude and high ambient temperature requiring maximum thrust.
C. Low altitude and low ambient temperatures.
D. Both A and B
D. Both A and B
Thrust Asymmetry Protection (TAP) is automatic and can be verified by observing a thrust reduction on the N1 indicator of the operating engine.
A. True
B. False
A. True
The engines can only be started with the auto start system.
A. True
B. False
A. True
