Location | Name | Inhibited When | Meaning Ground/Dim/Steady | Meaning Flight/Bright/Flashing |
Left Forward Panel | BELOW G/S P-INHIBIT | pushed <1000' RA | below g/s alert active | |
SPEED BRAKE DO NOT ARM | speed brake lever down | abnormal condition of auto speed brake | |
SPEED BRAKE ARMED | speed brake lever down | valid auto speed brake | |
STAB OUT OF TRIM | autopilot not engaged | autopilot not trimming correctly | |
Right Forward Panel | SPEEDBRAKES EXTENDED | on ground hydraulic system A pressure <750 psi | speed brake lever down detent / ground spoilers not stowed | speed brake lever beyond armed and TE flaps >10 or <800' RA |
BELOW G/S P-INHIBIT | pushed <1000' RA | below g/s alert active | |
INOP | | GPWS malfunction or power loss (eg. invalid inputs from RA, ADIRU, etc.) | |
Center Forward Panel | AUTO BRAKE DISARM | | manual braking applied, landing with RTO, malfunction, etc. | |
ANTISKID INOP | | system fault | |
LE FLAPS TRANSIT | during autoslat operation | LE transit, LE/TE discrepancy, LE slat skew, alternate flap extension until TE flap 10 and LE devices fully extended | |
LE FLAPS EXT | | LE flaps and slats extended (TE 1-5) or LE devices fully extended (TE 10-40) | |
NOSE/LEFT/RIGHT GEAR | | gear down and locked | |
NOSE/LEFT/RIGHT GEAR | | disagreement with gear lever, or not down and locked with one thrust idle <800' RA | |
Forward Overhead Panel | LOW QUANTITY | | low quantity in standby hydraulic reservoir | |
LOW PRESSURE | normally inhibited unless standby pump selected or automatically activated | output pressure of standby pump low | |
STBY RUDDER ON | (aircraft with RSEP modification) | standby hydraulics pressurising standby rudder pcu | |
LOW PRESSURE A/B | flight control switch to standby rudder | low hydraulic system pressure to ailerons, elevator and rudder | |
FEEL DIFF PRESS | | excessive differential pressure in elevator feel | |
SPEED TRIM FAIL | | failure of speed trim / failure of single FCC channel on recall | |
MACH TRIM FAIL | | failure of mach trim / failure of single FCC channel on recall | |
AUTO SLAT FAIL | | failure of auto slat / failure of single SMYD channel on recall | |
YAW DAMPER | | yaw damper not engaged | |
ENG/SPAR VALVE CLOSED 1/2 | | related valve closed | valve transit or disagreement with start lever or fire warning switch |