Warning Systems Flashcards
What are the 3 priority levels for crew alerting messages?
Warning, cautions and advisories.
Can you cancel warning and communications msgs?
No, only caution and advisory msgs
Explain how msgs are reordered when using RECALL
The messages are reordered, and the most recent message will be moved to the top.( If a message doesn’t reappear, no longer a fault)
Where do status msgs appear?
on the lower eicas screen. status page. Can be erased on the ground prior to dispatch, no logbook entry. Must be addressed if cannot be erased.
Are status messages considered to be crew alerts?
No, are used for dispatch purposes only.
When is the takeoff config warning generated?
- Flaps not in a TO position
- Stabalizer position outside of TO range or green band
- SPEED BRAKE lever not in the DOWN detent position.
- PARK BRAKE set
Explain the Fire bell warning inhibit during TO…
The bell and warning message for a engine fire are inhibited….. 20 sec elapsed time following nose gear extension & RA is greater than 400ft. whatever occurs first.
Explain master Caution inhibits during TO…
inhibit begins at 80 kts and ends at:
- 20 seconds afer nose gear ext.
- RA is greater than 400 ft, whichever occurs first.
If TO is Aborted, msgs remain inhibited until below 75kts.
when does a “caution terrain” msg occur?
40 -60 seconds to impact
when does a “terrain terrain, pull up” msg occur?
20-30 sec to impact
What does black vs. green vs amber vs red mean on terrain display?
Black = no terrain within 2,000 ft of a/c, or within 400ft of the nearest airport runway info. Green= 500-2000ft below Amber = 500ft below - 2000ft above Red= more than 2000 ft above
- dotted magenta - no terrain data available
- Red and amber represent terrain conflicts!
-300 describe the alt alert system…
900 ft = alt light
300 ft = alt light extinguishes
dev 300ft = warning
dev 900 ft or recapture within 300 ft = warning cease
Describe the alt alert system…
750 ft = alt alert light
250 ft = alt light extinguishes
dev 250 ft = warnings
dev 750 ft or within 250 ft = warning ceases
