Fire Protection Flashcards

1
Q

How many fire detection loops are installed on each engine?

A

Two, dual loops mounted in parallel

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2
Q

How many firex bottles are available for an engine fire?

A

Two

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3
Q

What type of Halon is in the engine firex bottle?

A

Halon 1301 pressurized with dry nitrogen

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4
Q

How is the engine fire detected by the crew?

A

Appropriate ENG FIRE PUSH switch/light illuminates
Fire bell sounds
EICAS warning message

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5
Q

What occurs when the ENG FIRE PUSH switch/light is pushed?

A
Fuel SOV closes
HYD SOV closes
Bleed air SOVs close
Generator is de-energized
Appropriate squibs are armed
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6
Q

Can we blow both bottles into one engine, if necessary?

A

Yes

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7
Q

How many fire detection loops are inside the APU containment case?

A

Two, dual loops mounted in parallel

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8
Q

How is an in-flight APU fire detected by the crew?

A

APU FIRE PUSH switch/light illuminates
Fire bell sounds
APU FIRE warning message on EICAS

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9
Q

How many firex bottles are available for an APU fire?

A

One

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10
Q

What type of extinguishing agent is used in the APU firex bottle?

A

Halon 1301 pressurized by nitrogen

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11
Q

What occurs during an unattended APU fire on the ground?

A
APU ECU shuts down the APU
APU FIRE switch/light illuminates
Fire bell sounds
APU FIRE warning message on EICAS
5 seconds later APU bottle will discharge automatically
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12
Q

What occurs during an APU fire in flight?

A

APU ECU shuts down the APU
APU FIRE switch/light illuminates
Fire bell sounds
APU FIRE warning message on EICAS

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13
Q

How many smoke detectors are there in the aft cargo compartment?

A

Two

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14
Q

How many smoke detectors are in the fwd cargo compartment?

A

Three

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15
Q

What are the flight deck indications of cargo smoke?

A
Triple chime
Master warning flashers
"Smoke" aural
SMOKE (AFT/FWD) CARGO warning message
Either FWD or AFT CARGO SMOKE PUSH switch/lights illuminate
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16
Q

How many firex bottles are there for cargo smoke?

A

Two:
Slow metered standard bottle released over approximately 60 minutes
and Quick discharge bottle

17
Q

How many smoke detectors are located in the lavatories?

A

One in the fwd

One in the aft

18
Q

What indication do we have for smoke in the lavatory?

A

Triple chime
Master warning flashers
SMOKE (FWD/AFT) LAV warning message

19
Q

What protection do we have for a lavatory waste compartment fire?

A

A firex bottle with heat sensitive capsules that will melt to discharge Halon 1301 directly into the waste compartment

20
Q

What indication will we get with a waste compartment fire?

A

None, unless it generates enough smoke to set off a smoke detector

21
Q

Fire Detection and extinguishing is provided in the…

A

L/R engine core sections and APU Compartment

22
Q

When the heat sensing elements are subjected to heat, the…

A

Resistance decreases

23
Q

The engine Firex bottles are located in the

A

Aft Equipment Bay

24
Q

The Lav Firex bottle is discharged by

A

Heat sensitive capsule autmoatically

25
Q

What 2 sub-systems comprise the Fire and Overheat Protection System?

A

Fire Overheat Detection System and Fire Extinguishing System

26
Q

What unit controls the Fire Protection, Smoke Detection, and Fire Ext. System?

A

FIDEEX Unit

27
Q

The FWD/AFT Cargo Bays have both Smoke det. and Fire ext. equipment. T/F

A

True

28
Q

Fire Overheat/Detection loop consists of 2 wires inside a metal sheath separated by_____

A

An Insulating Material(Thermistor)