QRH Flashcards
MASTER CAUTION ELEC BAT DISCHARGE
A fully charged battery supplies a MINIMUM of 30 minutes of standby power.
DC busses powered by the battery after loss of both generators.
- battery bus
- DC standby bus
- hot battery bus (always connected to the battery)
- switched hot battery bus (connected to the battery whenever the battery switch is ON)
(ISFD will continue for 150 minutes after loss of power to the battery bus)
MASTER CAUTION ELEC DRIVE
A generator drive malfunction occurs
if APU unavailable, plan to land at nearest available airport- only 1 source of pwr remains
MASTER CAUTION ELEC ELEC
A standby power or DC system fault occurs.
Will only illuminate on the ground. DO NOT TAKEOFF
LOSS OF BOTH ENGINE DRIVEN GENERATORS
Both engine driven generators are off.
Checklist leads to trying to get a generator back on line, or starting the APU (ONLY 1 APU START ATTEMPT IS RECOMMENDED SO WAIT UNTIL BELOW 250)
If no generators are able to power a transfer bus, a minimum of 30 minutes standby power from the battery remains
MASTER CAUTION ELEC SOURCE OFF
The transfer bus is not powered by the last selected source.
If reselecting the associated generator does not work, start the APU so the APU generator can supply the transfer bus.
If the APU is unable to to power the transfer bus
PLAN TO LAND AT NEAREST AVAILABLE AIRPORT
MASTER CAUTION ELEC STANDBY PWR OFF
One or more of these buses are not powered
- AC Standby Bus
- DC standby bus
- Battery bus
STANDBY POWER switch……….BAT
MASTER CAUTION ELEC TR UNIT
One or more of the transformer rectifiers are failed.
DO NOT USE AFDS APP MODE DURING ILS/GLS APPROACH.
DO NOT AUTOLAND
MASTER CAUTION ELEC TRANSFER BUS OFF
AC Transfer bus not energized.
Try to reengage generator, if not, start APU
MASTER CAUTION APU LOW OIL PRESSURE
APU will automatically shut down
APU switch OFF
MASTER CAUTION APU FAULT
APU shuts down automatically shuts down
APU switch OFF
IF THE FAULT LIGHT EXTINGUISHES after 5 minutes APU CAN BE RESTARTED
MASTER CAUTION APU OVERSPEED
APU RPM limit exceeded
APU switch OFF
MASTER CAUTION OVHT/DET ENGINE 1 OVERHEAT
Two loops set to a preselected temperature powered by the battery bus (powered directly from the battery in the event of AC power failure)
MEMORY ITEMS
-autothrottle (if engaged)…………disengage
-thrust lever (affected engine)……confirm…….close
-IF the ENG OVERHEAT light stays illuminated
»> go to ENG FIRE or SEVERE DAMAGE or SEPARATION
MASTER CAUTION OVHT/DET ENGINE 2 OVERHEAT
Two loops set to a preselected temperature powered by the battery bus (powered directly from the battery in the event of AC power failure)
MEMORY ITEMS
-autothrottle (if engaged)…………disengage
-thrust lever (affected engine)……confirm…….close
-IF the ENG OVERHEAT light stays illuminated
»> go to ENG FIRE or SEVERE DAMAGE or SEPARATION
MASTER CAUTION OVHT/DET APU DET INOP
A single loop is installed on the APU powered by the battery bus
APU switch ………..OFF
DO NOT RUN APU, an APU fire would not be detected
MASTER CAUTION FUEL LOW PRESSEURE
Center tank fuel pumps are on and pressure is low
Main tank, fuel pressure is LOW or
MASTER CAUTION FUEL FILTER BYPASS
Impending fuel filter bypass due to a contaminated filter.
> if ONE FILTER BYPASS light has illuminated, erratic engine operation and flameout may occur on affected engine due to fuel contamination
» if BOTH FILTER BYPASS lights have illuminated, PLAN TO LAND AT NEAREST AVAILABLE AIRPORT
NNC 12 FUEL CONFIG
- Both center tank fuel pump switches are off
- More than 726kg in center tank
- An engine is running
Checklist leads to selecting pumps to on ONCE IN LEVEL FLIGHT
NNC 12 FUEL CROSSFEED SELECTOR INOPERATIVE
Check circuit breaker (P6-3, B7) behind FO
If the circuit breaker is tripped it is NOT possible to determine the position of the valve.
If the circuit breaker is not tripped, the VALVE OPEN light indicates the valve is in a different position to the switch.
NNC 12 FUEL FUEL LEAK ENGINE
An engine fuel leak is suspected
- visual observation of fuel spry
- total fuel quantity decreasing at an abnormal rate
- engine has excessive fuel flow
- the IMBAL alert shows
- The LOW alert shows
- FMC CDU scratch pad messages
- USING RSV FUEL
- CHECK FMC FUEL QUANTITY
- INSUFFICIENT FUEL
FUEL LEAK IS CONFIRMED BY ONE OR BOTH
- fuel spray from engine or strut
- a change in the fuel imbalance of 230kg within 30 min or less
NNC 12 FUEL FUEL QUANTITY INDICATION INOPERATIVE
The fuel quantity indication is blank
enter and periodically update the FMC PERF INIT page