Day 6 - Elec, Fuel & Nav Flashcards
What is the minimum speed for the RAT?
140kts
How many aircraft batteries are there?
What’s their Voltage and Amps?
2 x nickel cadmium batteries
28v 23AH
AC ESS BUS is typically powered by AC BUS 1; but can it also be powered by AC BUS 2?
Yes
What are the 2 conditions for disconnecting the IDGs?
Cannot press it for more than 3 seconds
The engine must be windmilling
When will the IDG fault light illuminate?
If oil temp exceeds 180 degrees C
Low oil pressure (but not when N2 is below 14%)
How long does the RAT take to extend?
5 seconds for extension, plus an additional 3 seconds for power supply.
If Gen 1 line is off, what does it still supply power to ?
2 fuel pumps and 1 igniter
How long does the APU take to auto shut down after providing air conditioning?
60-120 seconds at 75%
In order for the RAT to auto deploy, what must fail?
Lose AC BUS 1 and 2, and you must be above 100kts
With only the emergency GEN operating, what bus bars are available?
AC ESS BUS and DC ESS BUSS via the ESS TR
Below 100kts, the DC BAT BUS is automatically connected to and powered by…?
The batteries
Are these colour CBs monitored…?
- green
- black
- red
Green - monitored (for more than 1 min, triggered on the ECAM)
Black - non-monitored
Red - reset by maintenance only
What do the following CB collar colours mean?
Black? Yellow? Red?
Black - System perm deactivated or not installed
Yellow - system deactivated as deferred defect
Red - CVR/FDR deactivated in accordance
Why do Wing tip brake CBs have red caps?
To prevent them being reset
Power supply priority?
1 Gens
2 GPU
3 APU
When will a battery fault light illuminate?
When the charging current for the corresponding battery is outside of limits
In this case the contractor opens.
Is the TAT probe heated?
Inflight yes, but not on the ground
How long to align the ADIRS?
At least 7mins
3 methods of tuning NAV aids?
Automatic
Manual
Back up
The “on bat” light on the ADIRS is on when?
Beginning of a complete IRS alignment
Batteries supply At least one ADIRU
ADIRS 1 usually supply’s which PFD & ND?
Captains side
ADIRS 3 can provide data to which PFD/ND?
Either CPT or FO
How do we normally tune nav aids?
Via the MCDU in Automatic
The ISIS gets Pitot and static data provided by which Pitot and static port?
Sby pitot
Sby static ports