Fire Protection

Question 1

How many hand held extinguishers are on the plane

Answer 1

3 - halon = flight deck, front left storage bin, front closet
1 - water = aft storage bin

Question 2

How is a fire reported in a two loop system

Answer 2

Both loops must detect a fire. If one fails the computer knows and operates off one loop

Question 3

What type detectors exist in the lav and cargo areas

Answer 3

LAV = normal smoke detector
Cargo = lazier smoke detector

Question 4

What happens after pushing the ENG FIRE PUSH

Answer 4

1. Arms squibs
2. Shuts off IDG
3. Closes PRSOV valve
4. Inhibits continuous ignition
5. Closes fuel, hydraulic, pneumatic SOVs

Question 5

What is protected by the fire loops

Answer 5

1. APU
2. Engines
3. Leading edges

Question 6

What’s the protection I the main landing gear bay

Answer 6

A single loop fire detection system

Question 7

What happens if smoke is detected in the lav

Answer 7

Automatic discharge of the halon bottle

Question 8

How many system fire bottles are on the aircraft

Answer 8

1. 2 serve both engines
2. 2 cargo
3. 1 APU

Question 9

What indications would you receive following an engine fire

Answer 9

1. Master warning, triple chime
2. Fire bell
3. Fire push switch light
4. L/R ENG FIRE warning

Question 10

What’s the difference between a FIRE FAIL caution
FIRE SYS FAULT caution
FIRE SYS FAULT status

Answer 10

1. FIRE FAIL caution = both loops have failed
2. FIRE SYS FAULT caution = communication between AIRINC and FIDEX system is not happening
3. FIRE SYS FAULT status = a single loop has failed

Question 11

What bus is the engine fire push light on

Answer 11

DC emergency bus

Question 12

Describe cargo bottle function

Answer 12

Both bottles blow but one is a fast release bottle and the other is a slow release over 60 minutes

Question 13

Can you fight fire in both cargo compartments

Answer 13

No

Question 14

Where are the cargo fire bottles located

PSM 10-20-13

Answer 14

Both are inside the right belly fairing

Question 15

How is the lav fire extinguishing actuated

PSM 10-30-2

Answer 15

The end of each discharge nozzle is sealed with a heat sensitive capsule

Question 16

What happens after pushing the FORWARD CARGO SMOKE PUSH switch light

Answer 16

Arms squibs

Question 17

How many fire smoke detectors are located in the cargo compartment

Answer 17

3 in forward and 2 in aft

Question 18

How many detectors must detect smoke in the cargo area in order to issue a cargo compartment smoke warning

Answer 18

2

Question 19

During a fire what cancels the fire bell

Answer 19

Master warning switch light. It also cancels master warning and triple chime

Question 20

What does an ENG BTL LO caution mean

Answer 20

Pressure in the bottle has dropped to a preset point through leakage or use

Question 21

What happens after pressing the cargo BOTTLE ARMED PUSH TO DISCH switch light

Answer 21

Both bottles blow