Fire Protection/Detection Flashcards Preview

Atlas Air B747 > Fire Protection/Detection > Flashcards

Flashcards in Fire Protection/Detection Deck (26):
1

AUDIO

AUDIO

2

What unlocks fire switch?

- Fire Warning - Fuel Control switch to CUTOFF - Pushing Fire Override Switch

3

How many fire bottles for engines?

2 on each wing

4

What happens when engine fire switch pulled out?

- HYD Fluid to EDHP shut off and EDHP depressurized - Eng Spar Valves close - Eng Bleed Valve closes - Arms Extinguishers - Trips ENG GEN

5

How many APU fire bottles?

One

6

How is APU shut down from exterior?

APU stop switch on APU ground panel located on right body gear well.

7

When will APU fire extinguisher automatically activate?

For fire warning light on the ground

8

What condition must be satisfied for an engine fire warning?

Both loops must detect a fire to cause warning.

9

Each has engine how many loops?

2 overheat 2 fire detector

10

Is there overheat detection loop for APU?

No, only dual loop fire detection

11

Do both loops have to detect fire for APU fire?

No, only one

12

How many detectors installed for lower cargo compartments?

4 dual loop detectors

13

How many detectors installed on main deck?

16 dual loop detectors

14

How do cargo detection systems work?

Sample air drawn through detectors by center bleed duct air.

15

Do both loops have to detect smoke to activate cargo fire warning?

Yes

16

What happens if a fault occurs in one loop of ANY fire/overheat test?

- System reconfigures for single loop operation - Operable loop will trigger condition

17

What fire detection system is provided for wheel wells?

Each main gear well has single loop FIRE detector EICAS: FIRE WHEEL WELL

18

What FP/FD is provided for crew rest area?

Smoke detectors that activate aural warning

19

Lav FP/FD system?

Smoke detector w/aural warning and auto extinguisher in trash.

20

What happens if APU FIRE Switch pulled out?

- Shuts down APU - Trips APU GEN - Arms Extinguisher - Closes APU Fuel Valve - Closes APU Bleed Air Valve - Closed Inlet Door

21

How many bottles are available for the Lower Lobes and how do they deploy?

4 TOTAL - Two deploy immediately - Two deploy after a short delay or upon touchdown (for 210 minutes)

22

How is detection system tested?

ENG DET are continuously monitored. All duel loop detectors are tested on initial power up. * no single loop wheel well test on power up

23

What happens when MAIN DECK CARGO FIRE Switch is ARMED?

- Enabled fire suppression system - Turns OFF 2 packs - Configs equip cooling to closed loop - Turns off all airflow to BOTH MAIN + AFT LLCs - Closes master trim air valve

24

What happens when FWD or AFT DECK CARGO FIRE Switch is ARMED?

- Arms LLC fire extinguishers - Turns OFF 2 packs - Configs equip cooling to override mode - Turns off all airflow + heat to LLCs - Closes master trim air valve

25

What happens when CARGO FIRE DEPRESS/DISCH is pressed while MAIN is ARMED?

Initiates airplane depressurization to slight below airplane altitude.

26

What happens when CARGO FIRE DEPRESS/DISCH is pressed while FWD/AFT is ARMED?

Initiates extinguisher discharge sequence