Fire Protection. FIRE

Question 1

What are the indications of an APU fire test performed with only battery power

Answer 1

Only on overhead fire panel

1. Red guarded fire light
2. SQUIB (white) light on the AGENT pb
3. DISCH (Amber) light on AGENT pb

Question 2

Number of halon fire bottles for each engine, APU, Cargo Compartment

Answer 2

1 Eng. - each has 2 bottles

2. APU - 1 bottle
3. Forward and aft cargo share 1 bottle

Question 3

Flight deck indications of lav smoke

Answer 3

NO flight deck indications that tell the pilot specifically which lav is effected

Only flight attendants can tell

Question 4

Type of smoke detection system for avionics compartment

Answer 4

1. Smoke detectors that only sense particles

2. NO heat sensing

Question 5

Why do the indications of a CARGO SMOKE occur twice during a test

Answer 5

Each channel of the SDCU is tested which is a dual channel computer called the Smoke Detection Control Unit

Question 6

How could the CARGO SMOKE system potentially give a false smoke indication

Answer 6

1 particulates

2. De icing fumes
3. Exhaust from nearby external power equipment
4. Taxiing aircraft

When on ground with cargo doors open, visually verify smoke before discharging

Question 7

Exterior indications of an APU Fire

Answer 7

Horn at nose of aircraft

Red APU FIRE light on exterior service bay Interphone Panel

Question 8

What are the indications of an engine fire and a APU fire.

Pic

Answer 8

1. Common to both -
   A. Continuous Repetitive Chime
   (CRC) sounds
   B. Red master warning light flashes
   C. Respective red guarded FIRE light
   Illuminates on the overhead FIRE
   Panel
2. Engine Fire
   A. Red ENG 1(2) FIRE message and
   Associated action steps appear in the
   E/WD memo section
   B. ENGINE page appears on the SD
   C. FIRE light illuminates for the affected
   Engine on the ENG control panel
3. APU fire
   A. Red APU FIRE message and associated
   Action steps appear in the E/WD memo
   Section
   B. APU page appears on the SD

Question 9

What’s the difference between an on ground APU fire verse an in flight fire detection/Protection system
(Pic)

Answer 9

1. On ground - APU master computer will auto perform an APU EMER SHUTDOWN and discharge the APU fire extinguisher
2. In flight - APU must be manually shut down by use of the APU FIRE pb and the fire extinguisher must be manually discharged using the AGENT pb

Question 10

Can the APU be manually shut down from outside the aircraft?

Pic

Answer 10

Yes, using the guarded APU SHUT OFF pb located on the exterior Service Bay Interphone Panel. However for extinguisher discharge is not possible

Question 11

What are the indications of lavatory smoke

Pic

Answer 11

1. Continuous Repetitive Chime(CRC) sounds
2. MASTER WARN lights flash
3. SMOKE LAVATORY SMOKE message appears on the E/WD memo section

Question 12

What are the methods of monitoring the Aft Cargo compartments temperature
(Pic)

Answer 12

The Aft Cargo compartment temperature can be monitored from either:

1. The ECAM CRUISE page
2. The ECAM COND page

Note: smoke detectors sense particulates and therefore all indications of cargo smoke remain following the discharge of the extinguisher due to halon agent particulates replacing smoke particulates.

Question 13

What are the indications for cargo smoke?

Pic

Answer 13

1. Continuous Repetitive Chime
   (CRC) sounds
2. MASTER WARN lights flash
3. SMOKE light illuminates on the overhead CARGO SMOKE panel for the affected cargo compartment
4. SMOKE FWD AFT CARGO SMOKE message and associated action steps appear on the E/WD memo section
5. ECAM COND page appears on the SD