VX A320 Systems UPDATED Exam
Questions and CORRECT Answers
What does the ON BAT light indicate? (FCOM-DSC-34-10-20) - CORRECT ANSWER- 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? (FCOM-DSC-34-10-40) - CORRECT
ANSWER- 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)? (FCOM-DSC-34-10-10) -
CORRECT ANSWER- F - Flight path vector
A - Airplane position
T - Track
H - Heading
A - Attitude
A - Acceleration
G - Ground Speed
What information is provided by the "ADR" units (BOATS)? (FCOM-DSC-34-10-10) -
CORRECT ANSWER- B - Barometric altitude
O - Overspeed warnings
A - AOA
T - Temperatures
S - Speed/Mach
What does a steady white ALIGN light indicate (older panel with keypad)? (FCOM-DSC-34-
10-20) - CORRECT ANSWER- The respective IR is in the Align mode
, How does the ADIRS panel indicate that an IR is in ALIGN mode? (FCOM-DSC-34-10-30) -
CORRECT ANSWER- Before any engine is started (displayed on E/WD):
a. 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):
a. IR IN ALIGN X MN memo appears in amber during IRS alignment
b. IR NOT ALIGNED is displayed as an ECAM Caution Message if the alignment of one
IRS is faulty
c. IR IN ATT ALIGN appears in green during the IR alignment in Attitude Mode
What does a flashing white align light mean (older panel with keypad)? (FCOM-DSC-34-10-
20) - CORRECT ANSWER- There are three reasons that the white align lights will flash:
a. There is no current position
b. The position is incorrect
c. 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? (FCOM-DSC-34-10-20) - CORRECT ANSWER- IR IN
ALIGN X MN memo pulses in green on the E/WD
How do you fast align an IR? (FCOM-PRO-SUP-34, FCOM-NOR-SOP-06) - CORRECT
ANSWER- 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? (FCOM-DSC-34-10-20) -
CORRECT ANSWER- Inertial data output of the respective IR is disconnected
What does steady illumination of the amber IR FAULT light indicate? (FCOM-DSC-34-10-
20) - CORRECT ANSWER- A fault affects the respective IR
Questions and CORRECT Answers
What does the ON BAT light indicate? (FCOM-DSC-34-10-20) - CORRECT ANSWER- 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? (FCOM-DSC-34-10-40) - CORRECT
ANSWER- 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)? (FCOM-DSC-34-10-10) -
CORRECT ANSWER- F - Flight path vector
A - Airplane position
T - Track
H - Heading
A - Attitude
A - Acceleration
G - Ground Speed
What information is provided by the "ADR" units (BOATS)? (FCOM-DSC-34-10-10) -
CORRECT ANSWER- B - Barometric altitude
O - Overspeed warnings
A - AOA
T - Temperatures
S - Speed/Mach
What does a steady white ALIGN light indicate (older panel with keypad)? (FCOM-DSC-34-
10-20) - CORRECT ANSWER- The respective IR is in the Align mode
, How does the ADIRS panel indicate that an IR is in ALIGN mode? (FCOM-DSC-34-10-30) -
CORRECT ANSWER- Before any engine is started (displayed on E/WD):
a. 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):
a. IR IN ALIGN X MN memo appears in amber during IRS alignment
b. IR NOT ALIGNED is displayed as an ECAM Caution Message if the alignment of one
IRS is faulty
c. IR IN ATT ALIGN appears in green during the IR alignment in Attitude Mode
What does a flashing white align light mean (older panel with keypad)? (FCOM-DSC-34-10-
20) - CORRECT ANSWER- There are three reasons that the white align lights will flash:
a. There is no current position
b. The position is incorrect
c. 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? (FCOM-DSC-34-10-20) - CORRECT ANSWER- IR IN
ALIGN X MN memo pulses in green on the E/WD
How do you fast align an IR? (FCOM-PRO-SUP-34, FCOM-NOR-SOP-06) - CORRECT
ANSWER- 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? (FCOM-DSC-34-10-20) -
CORRECT ANSWER- Inertial data output of the respective IR is disconnected
What does steady illumination of the amber IR FAULT light indicate? (FCOM-DSC-34-10-
20) - CORRECT ANSWER- A fault affects the respective IR
