Navigation/Surveillance Flashcards
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 of a full alignment
How long will each ADIRU stay on battery power?
ADIRS 2 and 3 will remain on battery power for 5 minutes to hold alignment until a generator can be restored. ADIRU 1 (ADIRU 3 if captain selected ATT HDG CAPT 3) will remain on battery power until
generator power is restored or battery #2 fails
What information is provided by the “IR” units?
(FAT HAAG)
º F - Flight path vector
º A - Airplane position
º T - Track
º H - Heading
º A - Attitude
º A - Acceleration
º G - Ground Speed
What information is provided by the “ADR” units?
(BOATS)
º B - Barometric altitude
º O - Overspeed warnings
º A - AOA
º T - Temperatures
º S - Speed/Mach
What does a steady white ALIGN light indicate?
The respective IR is in the Align mode
How does the ADIRS panel indicate that an IR is in ALIGN mode?
º Before any engine is started (displayed on E/WD):
- IR IN ALIGN X MN memo appears in green when at least one active IRS is being aligned
º When one engine is started (displayed on E/WD):
- IR IN ALIGN X MN memo appears in amber during IRS alignment
- IR NOT ALIGNED is displayed as an ECAM Caution Message if the alignment of one IRS is faulty
- IR IN ATT ALIGN appears in green during the IR alignment in Attitude Mode
What does a flashing white align light mean?
-There is no current position
- The position is incorrect
- The aircraft moved during alignment
How is the crew alerted to the FMGS having no current position, an incorrect position or if the aircraft has moved during the alignment?
IR IN ALIGN X MN memo pulses in green on the E/WD
How do you fast align an IR?
Select each ADIRS selector OFF and then back to NAV (one at a time) within 5 sec
What does the IR pushbutton do on the newer AIDIRS panel?
Inertial data output of the respective IR is disconnected
What does steady illumination of the amber IR FAULT light indicate?
A fault affects the respective IR
What does flashing illumination of the amber IR FAULT light indicate?
Attitude and heading may be recovered in ATT mode (you have lost the navigation portion)
What does the amber ADR FAULT light indicate?
A fault is detected in the Air Data Reference portion
Does turning the IR Mode Rotary Switch to OFF also turn off the ADR?
Yes
Can you turn the ADR OFF and still have the IR?
Yes
When is a full alignment required of the ADIRU 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 the 3 hours
- When any portion of the flight is conducted in Class II Navigation
Describe the process for a full alignment of the ADIRS when the FLAPS are not retracted.
º If the FLAPS are not retracted the flight crew should not set all ADIRS to OFF at the same time
º In order to perform the alignment with the FLAPS not retracted, set a single IR mode selector to OFF for more than 5 seconds, then set that IR mode selector to NAV. Repeat this for each remaining IR mode selector switch.
What would be missing on the on the Captain’s PFD and ND if IR1 failed or was turned OFF?
Attitude and navigation information would be lost. ATT and HDG flags will be displayed on the PFD and MAP NOT AVAIL will be on the ND
What action would recover the attitude and navigation information if IR1 failed or was turned off?
Selecting CAPT 3 on the EIS switching panel ATT/HDG selector
What would restore the lost altitude and airspeed information if IR1 failed or was turned off?
Selecting CAPT 3 on the EIS Switching Panel AIR DATA Selector
Pressing the SYS pushbutton does what?
Inhibits all EGPWS warnings except TERR system
What does an amber FAULT light in the SYS pushbutton indicate on the GPWS panel?
Any failure of basic GPWS modes 1 through 5
What does LDG FLAP 3 ON light indicate?
“Too Low Flaps” inhibited for a Flap 3 landing
When would you press the FLAP MODE pushbutton?
To avoid nuisance warnings when landing with flaps less than 3
