Message Level Notes Condition MEL Item
FWD EQPT SMOKE Advisory Basic Smoke in forward equipment cooling supply or exhaust ducts. None
FWD FUEL X-FEED Advisory Basic Forward fuel crossfeed valve disagreement with switch position 28-22-3
G/S DISAGREE Advisory Prov’n Instrument comparator unit senses left and right glide slope disagreement. 34-31-1
G/S FAIL Advisory Option Instrument comparator unit senses invalid glide slope data. 34-31-1
GEAR DISAGREE Caution Basic System 1 and 2 both indicate any gear disagree up or down. None
GEAR DOORS Advisory Basic Any landing gear door not closed and locked (systems 1 and 2). None
GEAR NOT DOWN Warning Basic Either throttle at idle and below N/A
800 feet radio altimeter and any gear not down and locked, or landing flaps and any gear down and locked.
GND PROX BITE Status Basic Ground proximity system fault. 34-33-1
34-46-1
GND PROX SYS Advisory Basic Basic GPWS or enhanced features are failed. 34-33-1
34-46-1
GND PROX SYS Status Basic Basic Ground Proximity Warning 34-33-1
System has failed.
34-46-1
GPS Advisory Option Left and Right GPS failure. 34-60-3
GROUND CALL Comm E Basic Interphone call received from nose gear APU Remote Control N/A
Panel.
HDG DISAGREE Advisory Option Instrument comparator unit senses left and right heading disagreement. 34-21-1
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