曝光台 注意防骗
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senses invalid Fast/Slow Command data.
FD COMMAND FAIL Advisory Prov’n Instrument comparator unit
senses invalid Flight Director command data.
FIRE/OVHT SYS Advisory Basic Fire/overheat system failure. 26-15-1
26-16-1
FLAPS Warning Basic LE and TE flaps not in takeoff N/A
position for a takeoff and takeoff
thrust selected on either engine.
FLAPS ISLN VAL Status Basic Flap isolation valve open when 27-51-2
uncommanded or failed.
Message Level Notes Condition MEL Item
FLAP LD RELIEF Advisory Basic Flaps fail to relieve at proper
airspeed or fail to recover.
FLAP/SLAT ELEC Status Basic FSEU 1 self-detected loss of
normal asymmetry and disagree alerts.
FLT CONT VALS Advisory Basic Two or more flight control valves
closed.
FLT DATA ACQ Status Basic Flight data recorder data
acquisition unit fault with both engines running.
FLT DATA REC Status Basic Flight data recorder off with both
engines running.
FLT DECK DOOR Advisory Option Flight deck door unlocked. 52-71-1
FLT DECK HUMID Advisory Prov’n Flight deck humidifier switch on N/A
and humidifier on below 21,000
or off above 21,000 feet.
FLT DECK TEMP Advisory Basic Flight deck supply duct 21-61-2
temperature excessive or zone
temperature flight deck channel
failure or switched off. 21-61-4
21-61-6
FLT REC OFF Status Basic Flight data recorder off. 31-31-1
FMC Comm E Basic A displayable AOC uplink has N/A
been received by the FMCS.
FMC MESSAGE Advisory Basic Flight management system N/A
detects one of several high
priority FMC messages.
F/O INSTR XFER Status Basic First officer’s instrument bus None
transferred with right main bus
still powered.
F/O PITOT Advisory Basic First officer’s main pitot heat 30-31-1
power or continuity loss or
incorrect power level.
30-31-5
Message Level Notes Condition MEL Item
FUEL CONFIG Advisory Basic Both center pumps switched off
with more than 600 kg remaining in center tank.
or
A fuel imbalance of 900 kg +/- 200 kg between the main tanks. 28-22-2 28-41-1 28-41-2
FUEL CROSSFEED Advisory Basic Switch/valve disagree. None
FUEL QTY BITE Status Basic Unknown accuracy in one or
more fuel tank quantity
indicators before incorporation of PRR N52987 (SB 757-28-A7), or all three quantity indicators after PRR, or any FQIS fault coupled with loss of valid digital data.
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