A320 Overhead Panel

Question 1

What does the ADIRU ON BAT light mean? How long will the light remain on for?

Answer 1

The aircraft batteries are powering one or more ADIRU; it also comes on briefly during alignment.

The ON BAT light will remain illuminated for 5 minutes to retain alignment data to allow a geneator reset. ADIRU 1 light will remain on

Question 2

What does a flashing FAULT light on the IR panel mean?

Answer 2

A flashing fault light means ATT & HDG may be recoverable

Question 3

What does a steady FAULT light mean on the IR panel?

Answer 3

A steady fault light means the IR is lost

Question 4

What does a flashing ALIGN light mean on the IR panel?

Answer 4

There is an alignment fault on the associated IR

• no present pos entered after 10 minutes; or
• 1 degree of difference between ppos and memorised position

A dual IR failure will increase LDR because anti-skid is lost

Question 5

What happens when the nav selector is placed in nav mode?

Answer 5

This is the normal position for alignment and navigation.

Full alignement takes 7-10 minutes

Fast alignment takes 3 minutes and is available only if the IRs were previously aligned; fast alignment must be done when the IRS Position differs by 5nm or more from the FMGC position

Question 6

What does the IR ATT rotary knob selector position do?

Answer 6

It is used to retain attitude and heading when the IR has a fault

Question 7

What does the ADR push button FAULT light and OFF light mean?

Answer 7

The ADIRU has a fault, when selected off the white OFF light illuminates

Question 8

What does the GEN 1 LINE p/b do?

Answer 8

It opens the gen 1 line contactor while still powering the number one fuel pump in each main tank

Question 9

What does the GEN 1 SMOKE light mean?

Answer 9

Smoke has been detected in the avionics vent extract duct for more than 5 seconds

Question 10

What does the EMERG GEN TEST P/B do?

Answer 10

It is for maintenance to test the RAT

Question 11

What does the RAT FAULT light mean?

Answer 11

It means that the emergency generator is not supplying power when AC 1 + 2 are not powered and the nose landing gear is up.

(A319 - light comes on only if the gen is not powered when AC 1 + 2 are not poeered; independent of gear position)

Question 12

What does the guarded EMERG GEN P/B do?

Answer 12

In AUTO: this will cause the RAT to extend is airspeed is > 100kts with the nose landing gear in the up position.

Once extended the RAT will couple within 3 seconds providing power as long as speed is not less than approximately 140 kts

A319 RAT works down to 125kts

Question 13

What does the ELEC RAT MAN ON P/B do?

Answer 13

This will manually extend the RAT and the generator will couple if the nose landing gear is up

Question 14

What does the TERR p/b FAULT light mean?

Answer 14

A fault is detected in the EGPWS terrain awareness display or terrain clearance floor functions. TAD is computed with captains baro setting and does not have baro setting error protection.

TAD and TCF work on FMGC 1 position.

Question 15

What does the TERR p/b OFF light mean?

Answer 15

EGPWS functions are disabled

Question 16

What do the TERR SYS P/B OFF & FAULT lights mean?

Answer 16

OFF: all GPWS warnings are inhibited

FAULT: GPWS malfunction; all warnings are inhibited

Question 17

What does the G/S, FLAP MODE, LDG FLAP 3 p/b do?

Answer 17

OFF:

• Glideslope EGPWS mode is disabled
• Too low flaps warning is disabled
• too low flaps warning is inhibited when flaps are at 3 for landing

Question 18

What are the 5 EGPWS modes?

Answer 18

Mode 1: Excessive descent rate “sink rate”

Mode 2: excessive terrain closure “terrain terrain”

Mode 3: altitude loss after takeoff “dont sink”

Mode 4: unsafe terrain clearance “too low flaps”

Mode 5: excessive glideslope deviation “glideslope”

Question 19

What does the RCDR GND CTL P/B do?

Answer 19

AUTO: the CVR And DFDF are engergised automatically…

• for 5 minutes after aircraft power up
• after an engine is started
• in-flight
• powered for 5 minutes after the last engine is shut down

ON: both CVR and DFDR are energised; the light will extinguish after engine start

Question 20

What does the CVR erase p/b do?

Answer 20

If the aircraft is on the ground with the park brake set the CVR will be erased

Question 21

What does the CVR test p/b do?

Answer 21

If held in, with the RCDR GND CTL p/b switched to ON and the parking brake is set, it activates the test; a low frequency tone will be heard over the speakers and a headset if plugged in

Question 22

What does the oxygen mask p/b do in the auto and man on positions?

Answer 22

In auto the masks will deploy if the cabin altitude exceeds 14,000ft +/- 500 and a pre-recorded message will play in the cabin.

Chemical generators work for 13-15 minutes depending on MSN

In man on the masks will be commanded to deploy but there will be no auto announcement