ADIRS PANEL Flashcards
ADIRS PANEL
Q: What does the ON BAT light indicate?
Ref: (FOM VOL. III-DSC-34-NAV-10-20)
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
ADIRS PANEL
Q: How long will each ADIRU stay on battery power?
Ref: (FFT N216FR QRH -18)
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.
ADIRS PANEL
Q: What information is provided by the “IR” units?
Ref: (FOM VOL. III-DSC-34-NAV-10-10)
Mnemonic: “HAT GAAF”
H – Heading
A – Attitude
T – Track
G - Ground Speed
A – Acceleration
A – Airplane position
F – Flight path vector
ADIRS PANEL
Q: What information is provided by the “ADR” units?
Ref: (FOM VOL. III-DSC-34-NAV-10-10)
“BOATS”
B - Barometric altitude
O - Overspeed warnings
A – AOA
T – Temperatures
S - Speed/Mach
ADIRS PANEL
Q: What does a steady white ALIGN light indicate (older panel with keypad)?
Ref: (FOM VOL. III-DSC-34-NAV-10-20)
The respective IR is in the Align mode.
ADIRS PANEL
Q: What are the indications on the E/WD when an IR is in ALIGN mode?
Ref: (FOM VOL. III-DSC-34-NAV-10-20)
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
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
ADIRS PANEL
Q: What does a flashing white align light mean (older panel with keypad)?
Ref: (FOM VOL. III-DSC-34-NAV-10-20)
There are three reasons that the white align lights will flash:
- There is no current position
- The position is incorrect
- The aircraft moved during alignment
ADIRS PANEL
Q: How is the crew alerted to the FMGS having no current position, an incorrect position or if the aircraft has moved during the alignment?
Ref: (FOM VOL. III-DSC-34-NAV-10-20)
IR IN ALIGN X MN memo pulses in green on the E/WD
ADIRS PANEL
Q: How do you fast align an IR?
Ref: (FOM VOL II, Section 5.25)
Select each ADIRS selector OFF and then back to NAV (one at a time) within 5 sec
ADIRS PANEL
Q: What does the IR pushbutton do on the newer ADIRS panel?
Ref: ((FOM VOL. III-DSC-34-NAV-10-20)
Inertial data output of the respective IR is disconnected
ADIRS PANEL
Q: What does steady illumination of the amber IR FAULT light indicate?
Ref: (FOM VOL. III-DSC-34-NAV-10-20)
A fault affects the respective IR
ADIRS PANEL
Q: What does flashing illumination of the amber IR FAULT light indicate?
Ref: (FOM VOL. III-DSC-34-NAV-10-20)
Attitude and heading may be recovered in ATT mode (you have lost the navigation portion)
ADIRS PANEL
Q: What does the amber ADR FAULT light indicate?
Ref: (FOM VOL. III-DSC-34-NAV-10-20)
A fault is detected in the Air Data Reference portion
ADIRS PANEL
Q: Does turning the IR Mode Rotary Switch to OFF also turn off the ADR?
Ref: (FOM VOL. III-DSC-34-NAV-10-20)
Yes
ADIRS PANEL
Q: Can you turn the ADR OFF and still have the IR?
Ref: (FOM VOL. III-DSC-34-NAV-10-20)
Yes
ADIRS PANEL
Q: When is a full alignment required/quick alignment of the ADIRU required?
Ref: (FOM VOL. II, Section 3.05)
A complete alignment must be accomplished in the following cases:
- “GAG CCFI”
- GPS coverage not available and NAVAID coverage poor
- Alaska
- GPS not available > 3 hours
- Class II
- Crew change
- First flight
- International
- Before the first flight of the day;
- When there is a crew change;
- When GPS is not available and NAVAID coverage is poor on the expected route;
- When GPS is not available and expected flight time exceeds 3 hours;
- All international and Alaska flights;
- Flight in Class 2 airspace.
On other flights, a fast alignment must be accomplished any time the difference between the IRS position and the FMGC position exceeds 5 NM (see MCDU POSITION MONITOR page).
ADIRS PANEL
Q: Describe the process for a full alignment of the ADIRU when the temperature is above 35 C.
Ref: (FOM VOL II, Section 5.40)
To perform a complete alignment with Flaps 1 and temp above 35C:
- Confirm the aircraft area is clear with ground personnel prior to pressurizing the hydraulic system
- Once the area is clear, turn the Y ELEC Pump ON
- BLUE ELEC PUMP pb AUTO (should already be in AUTO)
- BLUE PUMP OVRD pb to ON
- Verify Hydraulic Pressure (on SD page)
- Raise the flaps to 0
- Y ELEC Pump OFF
- BLUE PUMP OVRD pb OFF
- Perform the complete ADIRS alignment
- Confirm the aircraft area is clear with ground personnel prior to pressurizing the hydraulic system
- Y ELEC Pump ON
- BLUE PUMP OVRD pb ON
- Return the flaps to 1 if still in hot weather conditions
- Y ELEC Pump OFF
- BLUE PUMP OVRD pb OFF
ADIRS PANEL
Q: What would be missing on the Captain’s PFD and ND if IR1 failed or was turned OFF?
Ref: (FOM VOL. III-DSC-31-40)
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.
ADIRS PANEL
Q: What action would recover the attitude and navigation information if IR1 failed or was turned off?
Ref: (FOM VOL. III-DSC-34-NAV-10-20)
Selecting CAPT 3 on the EIS switching panel ATT/HDG selector
ADIRS PANEL
Q: Describe a post flight ADIRU accuracy check?
Ref: (FOM VOL II, Section 3.20)
If the drift for any IR is >5nm, refer to the IRS performance chart located in FOM VOL II, Section 3.20.
ADIRS PANEL
Q: What would restore the lost altitude and airspeed information if ADR1 failed or was turned off?
Ref: (FOM VOL. III-DSC-34-NAV-10-20)
Selecting CAPT 3 on the EIS Switching Panel AIR DATA Selector
