Warning Systems Flashcards
What is a simple fault?
many systems are redundant in this aircraft so a single fault in a redundant system is a simple fault. It will only illuminate master caution during RECALL
When will the PSEU illuminate?
on the ground:
-a fault detected in PSEU
OR
-Main cargo door micro switches or proximity switches have failed giving false door position indications during master caution recall
IT IS INHIBITED from thrust lever advance for TO until 30 seconds after touchdown
When will the landing gear warning cutout switch silence the gear horn?
Flaps up through 10 and above 200 feet RA
BELOW Glideslope light (amber)
below glideslope alert active and you can push to inhibit when below 1000 RA
GPWS INOP light (amber)
GPWS computer malfunction or power loss
When will the takeoff configuration warning sound with a/c on ground and either or both thrust levers advanced for t/o?
- TE flaps not in 1-25 t/o range
- TE flaps in skew or asymmetry condition or uncommanded motion
- LE devices not configured for T/O or uncommanded motion
- speed brake lever not DOWN position
- spoiler control valve open providing pressurized fluid to ground spoiler interlock valve
- parking brake set
- stab trim not in T/0 range
- both switches in any closed, latched, or locked pair (A&B) indicate main deck cargo door not secure
When will the cabin altitude warning activate?
When cabin altitude exceeds 10000 feet. it will be an intermittent warning horn and the CABIN ALTITUDE warning light will illuminate
What configurations activate the gear warning horn?
Flaps up through 10:
- altitude below 800 RA if either forward T/L has a low thrust lever angle (TLA)
- can be silenced unless a/c descends below 200 RA
Flaps 15-25:
-if either thrust lever is at a low TLA and it CANNOT be silenced
Flaps greater than 25:
-it will sound regardless of TLA and CANNOT be silenced
What systems does the PSEU monitor?
- t/o config warnings
- landing config warnings
- landing gear
- air/ground sensing
