Fire and Overheat Protection Flashcards Preview

CRJ 200 > Fire and Overheat Protection > Flashcards

Flashcards in Fire and Overheat Protection Deck (28):
1

Which areas have fire detection and extinguishing provided?

- Left and Right Nacelles
- APU areas

2

The fire detection system for the nacelles uses how many loops?

a dual-loop sensing element mounted in parallel

3

The cargo compartment has __ smoke detectors installed in the ceiling.

2

4

When smoke density exceeds a predetermined level in the cargo compartment, a signal is sent to:

EICAS, power is removed from the cargo compartment fan, heater, and the cargo compartment air is shut off. Becomes ISOLATED.

5

The engine fire bottles are charged with what? Where are they located?

- Halon 1301
- Located in the Aft Equipment Bay

6

The cargo compartment FIREX bottles are designed to allow a quick discharge of Halon, followed by a slow metered discharge of approximately ___ minutes duration.

45 minutes

7

The lavatory FIREX bottle is discharged by:

a heat sensitive capsule

8

When an engine fire is detected, the Master Warning Switch light flashes, a fire bell sounds, an EICAS message appears and the appropriate Engine Fire push light illuminates red. Pushing the Engine Fire push light does what?

- Arms the squibs dedicated to the affected engine
- Closes the fuel, hydraulic and bleed air SOV’s
- Engine-driven generator is tripped offline

9

Prior to starting the APU what message must not be displayed?

APU FIRE FAIL caution message

10

An APU fire on the ground will cause what?

- An automatic APU shutdown
- Automatic discharge of the APU FIREX bottle
- An external horn to sound

11

How can the fire bell be silenced?

Press the MASTER WARNING switch lights

12

How can you determine that the MLG loop has shorted?

MLG OVHT FAIL caution message

PRM p324

13

Which areas have only a single loop system?

MLG
14th stage bleed air

14

T/F
When the L or R ENGINE FIRE PUSH switch is pressed the master warning is canceled

False

15

On a dual loop detection system, which combinations would generate a FIRE FAIL indication?

Short/short
Normal/fire

16

T/F
The FFOD FIREX monitor test must be accomplished prior to every flight.

False, FFOD only

17

You complete the TEST/WARN and one of the messages is missing. What does this mean?

One of the loops has failed the continuity test.

18

Loop A shows normal, Loop B shows fire. What indication, if any, is presented on EICAS?

FIRE FAIL

19

What happens when the ENG FIRE PUSH light is pressed?

- Shuts off fuel, hydraulics, bleed air SOVs
- Trips off generator
- Arms the squibs on the firex bottles

20

What areas have fire detection only, no extinguishing?

- Jetpipe/ pylons
- MLG bays
- Bleed Air Duct (fuselage up to wing root)

21

Can an open loop detect any sort of fire?

Yes, but not in the place where it’s open.

22

When you push the L ENG FIRE PUSH switch, do any other switches light up? What does the indication mean?

Both BOTTLE 1 and BOTTLE 2 PUSH TO DISCH light up green.
The bottles are armed and have sufficient pressure.

23

Fire detection is powered by which bus? How about Fire protection?

- Detection on DC BATT BUS
- Protection on DC EMER BUS

24

MLG bay overheat detection is __ loop.

single

PRM p324

25

14th stage bleed air overheat detection is __ loop.

single

PRM 788

26

Engine, jetpipe, and pylon fire and overheat detection is __ loop.

dual

PRM p308

27

APU fire detection is __ loop

dual

PRM p314

28

10th stage bleed air overheat detection is __ loop.

dual

PRM p788