A320: APU & Avionics Ventilation | Quiz - Pilot George, L3 Airline Academy (CTC Aviation) Cadet Blog

While I have tried to ensure the information in this quiz is accurate, it is your own responsibility to check it against your airline / manufacturer manuals. With that said, if you spot any obvious errors then please let me know the question number and I'll aim to put it right!

Q15399 APU AUTO SHUTDOWN due to Fire is available during which Phases of Flight?

Ground only.

Phases 1 - 6.

All phases.

Phases 2 - 4.

Correct!

Incorrect!

Q15387 In the "Ground" Mode at Low Skin Air Temperatures, how is the Circulatory Air now Cooled?

Blower Fan

Skin Heat Exchanger

Extraction Fan

Air Conditioning

Correct!

Incorrect!

Q15397 What happens if Excessive APU EGT is Sensed?

Fire.

The red fault light illuminates and an ECAM drill instructs pilots to shutdown the APU.

The amber fault light illuminates, an ECAM message is displayed and APU shutsdown automatically.

It shutdowns automatically with no pilot notification needed.

Correct!

Incorrect!

Q15401 What does the message FLAP OPEN on the APU SD page mean?

Flap is fully open but the APU is not ready for start.

Flap is fully open and the APU is ready for start.

Pilot should consult the QRH.

Maintenance should be called. The flap should always be closed.

Correct!

Incorrect!

Q15400 What causes the APU FLAP to Open?

Manual APU starter value pushbutton (overhead panel)

Engine generators being unable to fullfil aircraft electrical needs.

MASTER SW to ON position. ECB then automatically controls flap opening.

ECB automatically controls the command for the starter door with no pilot input.

Correct!

Incorrect!

Q15398 APU AUTO SHUTDOWN is Available during which Phases of Flight?

Phases 2 - 4.

All phases.

Phases 1 - 6.

Ground only.

Correct!

Incorrect!

Q15402 What happens if the APU START Button is Pressed Immediately after the MASTER Button is Pressed?

Starter Energised, After 1.5 seconds ignition begins, At 65% N starter is de-engeriged, Ingnition off 2 seconds after 99% N.

Starter Energised and Ignition begins immediately. At 60% N starter is de-engeriged and ignitors switch off.

Starter Energised and Ignition begins immediately. At 65% N starter is de-engeriged and ignitors switch off.

Starter Energised, After 1.5 seconds ignition begins, At 60% N starter is de-engeriged, Ingnition off 2 seconds after 95% N.

Correct!

Incorrect!

Q15395 What causes an Automatic EMER.SHUTDOWN of the APU? When is this facility Available?

Excessive N, Ground

Excessive EGT, Ground

Fire, Ground

Fire, Air

Correct!

Incorrect!

Q15393 What happens when the EXTRACT is Selected to OVERRIDE?

Intermediate Circuit. A/C Air. Extractor fan stops.

Open Circuit. A/C Air. Extractor fan continues to run.

Closed Circuit. A/C Air. Extractor fan continues to run.

Closed Circuit. A/C Air. Extractor fan stops.

Correct!

Incorrect!

Q15405 What are the Altitude Limitations for the Use of APU Bleed & Packs?

Single Pack 20,000ft. Dual Packs 25,000ft

Single Pack 22,500ft. Dual Packs 15,000ft

Single Pack 15,00ft. Dual Packs 25,500ft

Single Pack 20,000ft. Dual Packs 22,500ft

Correct!

Incorrect!

Q15396 Why would the APU Continue to Run after being Selected OFF?

To cool down (Up to 1 minutes)

It is providing bleed air or electricity to the aircraft. Another system should be selected before it can shutdown.

To cool down (Up to 2 minutes)

A fault with the ECB. The APU CB should be pulled to reset inlet door position to closed.

Correct!

Incorrect!

Q15391 When might you have to put Both switches to OVERRIDE? (BLOWER and EXTRACT)

Smoke Configuration

If no fans are operating.

Smoke config, when instructed by the QRH.

If avionics are overheating.

Correct!

Incorrect!

Q15386 In the "Ground" Mode at High Skin Air Temperatures, which Config is in operation?

Closed

Open

Intermediate

Smoke

Correct!

Incorrect!

Q15394 What happens when the BLOWER and EXTRACT are Selected to Override? (eg, during AVIONICS SMOKE).

Inlet Open. Outlet Open. Blower Running. Extractor Stopped. A/C Air.

Inlet Closed. Outlet Open. Blower Stopped. Extractor Running. A/C Air.

Inlet Closed. Outlet Closed. Blower Stopped. Extractor Stopped. A/C Air.

Inlet Open. Outlet Open. Blower Running. Extractor Running. A/C Air.

Correct!

Incorrect!

Q15389 In the "Flight" Mode at High Skin Air Temperatures which Config. is in operation?

Closed

Smoke

Intermediate

Open

Correct!

Incorrect!

Q15392 What happens when the BLOWER is Selected to OVERRIDE?

Open Circuit. A/C Air. Blower fan stops.

Closed Circuit. A/C Air. Blower fan stops.

Closed Circuit. A/C Air. Blower fan keeps running.

Open Circuit. A/C Air. Blower fan keeps running.

Correct!

Incorrect!

Q15390 What causes the system to Transit from the GROUND mode to the FLIGHT mode?

10 seconds after rotation

Rotation

Manual Intervention by pilots.

TOGA / Flex Power

Correct!

Incorrect!

Q15388 In the "Flight" Mode at Low Skin Air Temperatures which Config. is in operation?

Open

Smoke

Intermediate

Closed

Correct!

Incorrect!

Q15406 What would you do if the APU SD page showed LO OIL LVL?

Check for leaks. If a leak is found, the APU can be used for 5 hours only.

Check for leaks. If a leak is found, the APU can be used for 2 hours only.

Check for leaks. If none the APU can be used for upto 5 hrs

Check for leaks. If none the APU can be used for upto 10 hrs

Correct!

Incorrect!

Q15404 What is the Maximum Altitude for APU start?

AC Buses 25,000ft. DC Bat 22,500ft. Engine 39,000ft.

AC Buses 25,000ft. DC Bat 39,000ft. Engine 41,000ft.

AC Buses 22,500ft. DC Bat 25,000ft. Engine 39,000ft.

AC Buses 39,000ft. DC Bat 25,000ft. Engine 41,000ft.

Correct!

Incorrect!

Q15403 AVAIL in the APU Switch means what?

The APU can supply bleed air only. A period of 5 minutes must elapse before electrical power is available as shown on EWD Memo.

The APU has achieved a stable N (2 secs after 95%) and is able to be started.

The APU has achieved a stable N (2 secs after 99%) and is able to supply to be started.

N > 95%. The APU services can can be started.

Correct!

Incorrect!

Quiz: A320: APU & Avionics Ventilation