07 - Engines, APU Flashcards
ENGINES, APU
1. Which system regulates the engine?
A dual-channel Electronic Engine Control (EEC)
- What is the indication an EEC is operating in normal mode?
White ON lights are the only lights illuminated on the associated EEC switch on the engine panel
- What are the indications of EEC hard alternate and soft alternate modes?
Indication of Soft Alternate mode is the amber ALTN switch illuminates and the white ON indication remains visible
- In Hard alternate mode, only the amber ALTN remains illuminated
- The EECs provide redline overspeed protection for which engine parameters(s)?
N1 & N2
- When do the EECs select approach idle for the operating engine?
- With flaps 15 or greater, or
- Any time the flaps are not fully retracted and engine anti-ice is on
- What does the ENGINE CONTROL light indicate and when is it armed?
A non-dispatchable fault in the EEC. It operates when;
- the respective engine is operating,
- aircraft on the ground, and
- below 80 kts prior to takeoff, or 30 seconds after touchdown
- When is the ENG FAIL alert displayed?
- The respective engine is operating at a condition below sustainable idle (63% N2), and
- the engine start lever is in the IDLE position
- How are the secondary engine instruments toggled?
ENG is selected on the Multi-Function Display panel
- How are EGT redline exceedances indicated?
The digital readout, box, needle, and indicator change to red
- How is an EGT exceedance displayed after engine shutdown?
A box the color of the exceedance (red or amber) displays around the digital readout where the exceedance occurred
- How is the N1/SPD REF SET page displayed on the Max Display System?
By selecting INFO on the MFD panel on the forward electronic panel
- What does the THRUST crew alert on the Engine Display indicate?
The associated engine thrust is more or less than the commanded thrust
- What are the indications of reverse thrust on the Engine Display?
- Amber REV indicates the associated thrust reverser is moved from stowed position
- Green REV indicates the thrust reverser is deployed
- What does selecting FUEL USED display?
Fuel used since the last reset
- What does the illumination of the FUEL FLOW crew alert indicate?
Fuel flow is abnormally high when compared to the FMC-expected fuel flow
- What does the illumination of the OIL FILTER BYPASS light indicate?
Impending bypass of oil supply filter
- Which engine start ignitor is available on standby power?
Right
- The auto-relight function of the Engine Start System is available when the engine start switches are in which position(s)?
Any position
- What does MOTORING on the N2 indicator indicate?
Bowed Rotor Motoring is active
- Which start malfunction(s) do the EECs monitor for during engine start?
- Impending hot starts
- engine stalls
- EGT start limit exceedances
- wet starts
- How is an impending hot start indicated during engine starting?
White box surrounding the EGT digital readout flashes white
- What does the illumination of the REVERSER LIMITED light indicate?
- In flight; a fault in the thrust reverser system that limits reverse thrust. Thrust reverse will not deploy or will be limited to idle
- On ground; indicates a malfunction has occurred
- What does the illumination of the REVERSER COMMAND light indicate?
The reverse thrust lever is not in the down position in flight
- What does the APU provide?
Electric and pneumatic power on ground and in flight.
- Bleed air up your 17,000’
- Electric up to 41,000’
- Both up to 10,000’
- Does the APU require the BAT switch to be on to operate?
Yes
- How long should the APU run after illumination of the APU GEN OFF BUS light before
opening the APU bleed valve?
2 minutes
- How long should a pilot wait after the APU switch is selected OFF before selecting the BAT switch OFF?
3 minutes
- What will cause the automatic shutdown of the APU?
• RPM overspeed conditions
• low oil pressure
• high oil temperature
• APU fire
• Fuel Control Unit failure
• EGT exceedance, and
• other system faults monitored by the ECU
- Turning BAT switch OFF?
