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 bottles

A

Halon 1301 pressurized with dry nitrogen

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4
Q

How is an engine fire detected by the crew

A
  1. Appropriate ENG FIRE PUSH switch light illuminates
  2. fire bell sounds
  3. EICAS warning message
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5
Q

What occurs when the ENG FIRE PUSH switch light is pushed

A
  1. Fuel SOV closes
  2. HYD SOV closes,
  3. Bleed air SOVs close,
  4. generator is de-energized
  5. the 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
  1. APU FIRE PUSH switch light illuminates
  2. fire bell sounds
  3. an 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 with dry nitrogen

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11
Q

What occurs during an unattended APU fire on the ground

A

APU ECU shuts down the APU.

5 seconds later, the APU bottle will discharge automatically

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12
Q

What occurs during an APU fire in flight

A

The APU ECU shuts down the APU.

The bottle does not discharge automatically, the crew must discharge the bottle

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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 there 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 CARGO warning message,
or SMOKE 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, one is a slow metered standard bottle that should last approximately 60 minutes, and the other is a quick discharge bottle

17
Q

How many smoke detectors are located in the lavatories

A

One in the fwd and one in the aft

18
Q

What indication do we have for smoke in a lavatory

A

Triple chime, master warning flashers,

SMOKE FWD LAV or SMOKE 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