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Crj 900 > Fire Prot > Flashcards

Fire Prot Flashcards

0
Q

Fidex system avail for?

A

Engine nacelles
Apu
Cargo comp

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1
Q

How many engine fire det loops?

A

2 loops

Both loops must detect fire or ovht

Short in one loop? Sngle loop detect
L/R FIRE FAIL caution

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2
Q

L/R FIRE FAIL caution?

A

Short or open circuit in one loop detected.

Switches to sngle loop detect

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3
Q

Engine extinguishing sys

How many bottles?

A

Located in aft equip bay

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4
Q

L/R eng fire push?

A

FueL
BLEED AIR
Hydraulic SOV
Arms squibs ( both btls)

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5
Q

Engine bottles contain?

A

Halon

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6
Q

BTL 1/2 ARMED PUSH TO DISCH LT?

A

Squib is armed and btl charged

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7
Q

APU fire on gnd?

A

Shuts down

After 5 sec , discharges btl

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8
Q

APU FIRE PUSH pressed in?

A

Btl armed push to discharge lt comes on

Apu squibs armed
Apu fuel SOV closes
Apu lcv closes

APU fire shutoff Relay is energized to shutdown APU

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9
Q

What type of fire detection in cargo

A

Optical sensors

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10
Q

How many optical smoke detectors in cargo bins?

A

FWD 3

AFT. 2

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11
Q

How many cargo detectors to detect smoke?

A

2 cargo detectors must detect smoke for warning

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12
Q

Cargo smoke detector fault?

A

FIRE SYS FAULT status

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13
Q

Fire suppression for cargo departments?

A

1 hi rate discharge

1 lo rate discharge btl

Located inside rt belly fairing of main landing gear

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14
Q

Qty MLG OVHT DET loops?

A

Single loop per wheel

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15
Q

CARGO SMOKE PUSH?

A

Arms fwd and aft squibs

Closes AC SOV valve

Heater off

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16
Q

Cargo btls located?

A

Inside rt belly fairing aft of main landing gear

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17
Q

Engine qty loops?

A

Dual loops - 2 bottles - 2 squibs

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18
Q

Apu qty loops , btl, squibs

A

Dual loops - 1 btl - 1 squib

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19
Q

Cargo qty smk detectors- btls

A

Optical sensors -3 fwd, 2 aft

2 btls hi/ lo ( dischg simultaneously)

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20
Q

MLG qty loops

A

1/ wheel

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21
Q

THE FIDEX interfaces with

A

Engines

Nacelles

Cargo comp

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22
Q

Engine fire detection qty loops

A

Dual heat sens loops

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23
Q

How many loops to detect a fire?

A

2 needed to detect a fire

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24
Q

Fault in one engine fire detect loop?

A

L/R FIRE FAIL caution

Switches to sngl loop detection

25
Q

APU FIRE FAIL caution?

A

Short circuit or open circuit in 1 loop

26
Q

APU how many loops?

A

Dual loops

Both loops needed to detect fire

27
Q

Cargo detector fault?

A

FIRE SYS FAULT status

switches to single detector ops

28
Q

Cargo fire bottles

A

2

Hi rate btl and lo rate btl

Fire simultaneously

Located inside rt belly fairing

29
Q

What arms aft and fwd cargo squibs?

A

Cargo smoke push

aft also closes ac sov and heater

30
Q

How many APU firex bottles?

A

1 APU bottel (1 squib)

32
Q

Which system is not part of fidex system?

A

LAV

33
Q

LAV fire detection / protection?

A

Ceiling mounted smoke detector

Waste compartment fire ext

34
Q

CARGO

btl armed push to disch

If lit green?

A

Squibs armed

Bottles charged

35
Q

LAV extinguishing components?

A

Ext bottle w/ dual dischg nozzle
(End of nozzles have heat sens capsule)

Temp sensor on inside of door to provide evidence of hi heat

36
Q

What happens when smoke detected on LAV?

A

Aural alarm sounds in LAV

EICAS SMOKE FWD(AFT) LAV

37
Q

Do both cargo bottles discharge simultaneously?

A

Yes

38
Q

Apu fire on gnd , fuel and bleed at SOV close .. After 5 seconds??

A

Fire btl discharges automatically

External horn blows

39
Q

Where do we have smoke detection?

A

Cargo

Lav

40
Q

What happens when the

ENG FIRE PUSH switch light is pressed

A

Switch lights. illuminate

Arms both SQUIBS

SOV fuel closes

SOV BLEED AIR

SOV HYDR

generator off-line

FADEC disables both ignition systems on the affected engine

41
Q

Does the APU shut down for a fire on the ground

In-flight

A

Yes!!

On the ground the bottles discharge in five seconds

In-flight the crew much discharge the bottle

42
Q

What happens when a cargo smoke warning is generated OR cargo smoke push switch light is pressed?

A

Heater shuts down

Air inlet us will be close

Air outlet SOV closes

( also ….. cargo smoke push switch light arms squibs)

43
Q

What actually fires the cargo extinguisher squibs??

A

The green bottle Armed push to discharge switch

44
Q

How many cargo bottles

A

2

One fastest charge one slow discharge

45
Q

The FIDEX Unit is used to monitor the…?… of the loops

A

Electrical resistance

46
Q

How many portable halon extinguishers and where?

A

3

Behind the copilot

Entrance storage compartment

Wardrobe closet

FOE.. fuel oil electric

47
Q

How many water extinguishers

A

1

Right aft bulkhead of Cabin

Used for wood paper and fabric

48
Q

Where is the FCU(fire control unit) located?

A

Under captains storage bin

49
Q

Cargo fire extinguishers discharge time?

A

Fast btl. 60 seconds

Slo bottle 60 minutes

50
Q

Fwd cargo push switch?

A

Only arms squibs

51
Q

APU shuts down automatically for a fire inflight and on ground!!

Whats the difference tho?

A

Ground.. fire btl auto fires after 5 seconds

In flight the crew must discharge

8-9 ch8 fire protection

52
Q

Cargo bay fires btls are where?

A

Rt wing fairing

8-14

53
Q

Dual loop systems?

A

Engines

APU

54
Q

Single loop systems

A

Main landing gear

55
Q

FIRE SYS OK ….is what type of message?

A

ADVISORY

56
Q

Push fwd cargo push swtch?

A

Only arms squibs

57
Q

If the fidec detects smoke in the after cargo Bay, Will it automatically shut off the cargo bay heater and close the intake and exhaust shut off valves?

A

Yes.. automatically

58
Q

Fire sys fault status?

A

One of the smoke detectors fails the built-in test

Now requiring only one smoke detector to Trip

59
Q

FIRE SYS FAULT status?

A

Loss of redundancy

Failed loop in the engine or APU … or failure of a cargo smoke detectors

60
Q

How many portable hand operated fire extinguishers?

A

3

Flight deck

Forward entrance stowage

Wardrobe closet

61
Q

What type of Halon?

A

Halon1211

62
Q

Halon 1211 is used for?

A

FOE

FIRE
OIL
ELECTRICAL

Crj 900 (45 decks)

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