Aircraft Systems Flashcards
What is the minimum battery voltage?
25.5 volts
Is the minimum battery voltage 25.5 with the battery PBS ON or OFF?
Off
How do you charge the batteries if the voltage is below 25.5?
Select EXT power ON, place BAT PBs ON, check ECAM ELEC page that contactors are closed and batteries are charging
How LONG does it take to charge the battery if the voltage is below 25.5?
20 min
What does a FAULT light in a battery PB indicate?
Charging current for the corresponding battery is outside normal limits
With the FAULT light illuminated in the battery pb is the battery contactor open or closed?
Open
With the battery PBs selected, what busses are powered? (Assuming batteries are the only power source)
- HOT BATTERY BUS 1 and 2 are always powered.
- DC BATTERY BUS
What is the difference between a green CB and a black CB?
Green CBs are monitored by the FWS. If a green CB is out for more than 1 minutes, then an ECAM will be generated.
Black CBs are not directly monitored by the FWS. In this case, the component protected by a black CB is monitored directly by the FWS.
What is the significance of CBs with red caps?
WTB CBs. We never reset these CBs
Explain the Allegiant CB reset policy
- Do not reset a tripped CB in flight
- On the ground; only reset a CB under the direction of maintence. Only 1 attempt reset.
Note: the CA can exercise emergency authority and reset a CB, if necessary, for the safe continuation of the flight. Always allow a 5 minute cooling period and ensure a logbook write up has been completed
What lights should be illuminated during a preflight?
None.
Contact maintenance if any light is illuminated unless specifically directed by an MEL.
What is the function of the Audio Switching panel switch?
If a failure of a pilots ACP occurs, the third ACP on the overhead panel can be selected and the pilot can make all ACP selections from the overhead panel.
ECAM memo “AUDIO 3 XFRD” is displaced
When is a full ADIRS alignment required?
- before the first flight of the day, or
- when there is a crew change, or
- when the gps is not available and the NAVAIDS coverage is poor on the expected route, or
- when the gps is not available and the expected flight time is more than 3 hours.
- when flight is expected to be conducted in class II navigation
When is a quick alignment of ADIRS acceptable?
A fast IRS alignment must be performed if a complete IRS alignment is not necessary and the difference between the IRS position and the FMGC position is at or above 5NM.
(See MCDU POSITION MONITOR page)
How is a ADIRS quick align performed?
- Turn each IR selector OFF and back ON (must occur within 5 sec for each IR)
- align on REF
When you turn the mode selectors to NAV, what are you looking for on the panel?
The ALIGN light illuminates steady
What does the ON BAT light indicate?
It is illuminated amber if one or more IR(s) is supplied by the aircraft battery. Also illuminates briefly during the beginning on a full alignment
What does the steady white ALIGN light indicate?
The respective IR is in the align mode
What does it mean when the IR lights are extinguished?
Alignment has been completed
What does a flashing white align light mean?
- IR alignment fault (aircraft moved during alignment)
- No present position entered within 10 min of NAV selection
- Difference of 1 degree LAT/LONG between shutdown and entered position
What does a steady illumination of the amber IRU FAULT light indicate?
A fault affects the respective IR
What does a flashing illumination of the amber IRU FAULT light indicate?
Attitude and heading may be recovered in ATT mode (you’ve lost the navigation portion)
What does the amber ADR FAULT light indicate?
A fault is detected in the air data reference part
Does turning the IR to OFF also turn off the ADR?
Yes