Fire Protection

Question 1

What do the engines and APU use to detect a fire condition?

Answer 1

A sensor tube filled with Helium and a Hydrogen-filled core.

AOM 2-07-10 page 1.

Question 2

What happens if a sensor tube’s integrity switch is open?

Answer 2

An E1(2)/APU FIREDET FAIL Caution message appears.

AOM 2-07-10 page 1.

Question 3

What are the indications of an engine fire?

Answer 3

• The associated fire extinguishing handle illuminates
• an aural warning is generated, a warning message appears on the EICAS,
• and the master warning lights flash.

AOM 2-07-10 page 1.

Question 4

What are the indications of an APU fire?

Answer 4

• aural warning is generated,
• warning message appears on the EICAS,
• master warning lights flash.

AOM 2-07-10 page 1.

Question 5

How many fire extinguishing bottles are provided for the engines and APU?

Answer 5

2 for the engines, 1 for the APU.

AOM 2-07-10 page 4.

Question 6

Where are the engine and APU fire extinguishing bottles located?

Answer 6

In the tail cone

Question 7

Can either engine fire extinguishing bottle be fired to either engine?

Answer 7

Yes.

AOM 2-07-10 page 4.

Question 8

What are the memory items for an engine fire?

Answer 8

Associated Thrust Lever…IDLE, Associated Start/Stop Selector…STOP, Associated Fire Extinguishing Handle…PULL (DO NOT ROTATE). AOM 1-03-11 page 1.

Question 9

What are the memory items for an APU fire?

Answer 9

APU Fuel Shutoff Valve…CLOSE.

AOM 1-03-09 page 1.

Question 10

What indications should be seen during a Fire Detection System Test?

Answer 10

3-4-5:
-3 lights overhead (Engine fire extinguishing handles illuminate and baggage fire extinguishing button illuminates),

• 4 lights on the glareshield (2 master warning lights, 2 master caution lights),
• 5 messages on the EICAS (APU FIRE Warning, ENG 1(2) FIRE Warning, BAGG SMOKE Warning, APU FIREDET FAIL Caution, E 1(2) FIREDET FAIL Caution). The aural warning also sounds and the baggage compartment fan deactivates. AOM 2-07-10 page 7.

Question 11

What occurs when smoke is detected inside the lavatory?

Answer 11

• The smoke detector panel red alarm light flashes
• horn sounds on the panel.
• A LAV SMOKE warning message appears on the EICAS.

AOM 2-07-15 page 1.

Question 12

How many smoke detector modules are in the baggage compartment?

Answer 12

AOM 2-07-20 page 1.

Question 13

What are the indications of a baggage smoke detection?

Answer 13

A BAGG SMOKE warning message on the EICAS and an illuminated BAGG EXTG light on the overhead panel.

AOM 2-07-20 pages 1 and 4.

Question 14

During ENG Fire what 5 messages are on EICAS?

Answer 14

5 messages on the EICAS (

• APU FIRE Warning,
• ENG 1(2) FIRE Warning
• BAGG SMOKE Warning
• APU FIREDET FAIL Caution
• E 1(2) FIREDET FAIL Caution).

The aural warning also sounds and the baggage compartment fan deactivates. AOM 2-07-10 page 7.