Aural/ Visual Warning System Flashcards
What does DCU stand for?
Data Concentrator Unit
What does LDU stand for?
Lamp Driver Unit
What does AECU stand for?
Audio Electronic Control Unit
What buttons on the EICAS Controller will remain operational even during the event of a complete AC failure?
PRI, STAT, STEP, CAS
A triple chime is accompanied with a what?
Master warning
Take off configuration warnings are armed when engines are above 70% and?
- Brakes, parking
- Flaps not set for t/o
- Autopilot engaged
- Spoilers not retracted
- Trim not in t/o range
B.F.A.S.T.
During take off, the DCU inhibits caution messages when?
- Both engines greater than 79% N1
- IAS >80kts
- Weight on wheels
During landing, the DCU inhibits caution messages when?
- Less than 400ft AGL
- Gear down
What does MDC stand for?
Maintenance Diagnostic Computer
What does HLIS stand for?
Hard landing indication system
If an annunciated system malfunction CAS message suddenly extinguished, it indicates what?
The malfunction no longer exists
The master caution lights can be reset:
Any time by depressing either master caution switch light
The colour CAS message that indicates requiring attention but not immediate action is?
Amber (caution)
Of the aural sounds, the one that can be muted is the?
Voice
Most cockpit switch lights are dimmed how?
By selecting the BRT/DIM switch to DIM
ED1 displays?
Primary
ED 2 displays?
Status
Clacker sound means?
VMO/MMO/ flap overspeed
What button will cycle through the main pages if the buttons do not work?
STEP
When is the cabin pressurisation shown on ED1?
Only when it is in the manual mode
How long after the gear and flap are up does the indications leave the primary page?
30 seconds
APU/ EGT displays when?
PWR FUEL button selected
What are the synoptic pages?
- ELEC (AC/DC)
- Hydraulic
- Flight controls
Second “bump” of Elec cycles between AC & DC
In the event of ED1 failure, how can you restore the primary page?
It automatically transfers to ED2
Caution inhibit is cancelled when?
Both engines are less than 67.6%
RADALT >400ft with landing gear extended
30 seconds after the inhibit began
30 seconds after air to ground transition
Which messages on the EICAS can be cleared from view? How?
Cautions with the CAS key of the ECP, Status messages with the STAT key.
How can amber CAS messages be hidden?
Push CAS button
When can CAS messages be hidden?
When both main generators are on line
Moving EICAS information from one display to an alternate display is done via the:
Reversionary Control Panel
