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B787 > Fire Protection > Flashcards

Fire Protection Flashcards

1
Q

DET FIRE ENG L/R

A

Both fire loops of respective engine have failed

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2
Q

Indications of engine fire:

A

Fire bell

Master Warning lights

FIRE ENGINE L/R EICAS

Engine fire switch illuminates

Engine fire switch unlocks

FUEL CONTROL switch illuminates

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3
Q

Indications of engine overheat:

A

Caution beep

Master CAUTION lights

OVERHEAT ENG L/R EICAS

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4
Q

When are the engine fire switches unlocked?

A

Will automatically unlock in the event of a fire warning

OR

When FUEL CONTROL switch in CUTOFF

Manually unlocked with override switch

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5
Q

Pulling fire switch:

A

Arms both fire extinguishers

Closes engine and spar valves

Closes engine anti-ice valve

Trips engine generators off

Shuts off fluid to engine-driven hydraulic pump

Depressurizes engine-driven hydraulic pump

Removes power from T/R isolation valve

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6
Q

APU fire system

A

Fire detection and extinguishing

Dual fire detector loops

No overheat protection

Both loops must detect fire

APU fire will automatically shut down APU

If fault detected in one loop, single loop ops

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7
Q

DET FIRE APU

A

APU fire detection system failed

Both loops failed

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8
Q

Indications of APU fire:

A

Fire bell

Master WARNING lights

FIRA APU EICAS

APU fire switch illuminates

APU fire switch unlocks

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9
Q

Pulling APU fire switch out:

A

Arms the APU fire extinguisher bottle

Closes APU fuel valve

Closes APU inlet door

Trips APU generator field and breaker

Shuts down APU if automatic shutdown did not occur

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10
Q

Sequence of automatic shutdown of APU due to fire:

On ground with both engines off?

A

APU will shut down immediately

After 15 seconds the fire extinguisher will automatically discharge (gives time for APU fuel valve to close

On ground with engines off, an APU fire signal from either fire loop causes an APU shutdown and extinguisher bottle discharge

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11
Q

How many APU fire extinguisher bottles?

A

One

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12
Q

Where is the APU ground control fire panel located?

A

On P40 panel, on back of nose gear strut

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13
Q

Main wheel well fire system?

A

Dual detector channels

Overheat and fire detection

No fire extinguishing

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14
Q

Indications of Main Wheel Well Fire:

A

Fire bell

Master WARNING lights

FIRE WHEEL WELL EICAS

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15
Q

Indications of Main Wheel Well overheat warning

A

Caution beeper

Master CAUTION lights

OVERHEAT WHEEL WELL EICAS

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16
Q

Cargo fire suppression?

A

Provided for 330 minute ETOPS

Smoke detection and fire extinguishing

17
Q

How many smoke detectors in 787-9?

A

18 detectors in fwd compartment

11 in aft compartment, two of which in bulk

18
Q

How many cargo smoke detectors in 787-8?

A

14 detectors in fwd compartment

8 in the aft, including 2 in the bulk

19
Q

What is disabled if smoke in aft cargo compartment?

A

The HF radios

20
Q

What causes fire warning in a cargo compartment?

A

If two smoke detectors in the same compartment detect fire/overheat

If one detector fails, then a single smoke detector can cause a fire warning

21
Q

Indications of cargo fire:

A

Fire bell

Master WARNING lights

FIRE CARGO FWD/AFT EICAS

CARGO FIRE (FWD or AFT) illuminates

22
Q

How many fire bottles for cargo fire extinguishing?

A

7

2 hi pressure

5 low pressure

23
Q

In flight, a cargo fire is indicated. Describe how the system operates

A

In flight, a fire warning will cause immediate automatic discharge of two fire bottles into the affected compartment

CARGO FIRE DISCH light
BOTTLE DISCH CARGO EICAS

Remaining fire bottles will discharge at reduced rate after a 15 minute delay

If land within 15 minute delay, only one remaining bottle will discharge at reduced rate

24
Q

On ground, if CARGO FIRE DISCH switch is pressed, what happens?

A

3 bottles will discharge,
2 at high rate,
1 at reduced rate

CARGO FIRE DISCH switch light
BOTTLE DISCH CARGO EICAS

25
Q

Pushing CARGO FIRE ARM switch:

A 
Arms all fire bottles
Arms selected extinguisher valves
Turns off both lower recircs
Shuts off cargo heat
Commands packs to min air flow
Shuts off bulk vent system (AFT)
Shuts off lav/galley vent fans (AFT)
Associated equip cooling to OVRD
Shuts off misc equip cooling fan (FWD)
Shuts off IFE cooling
Shuts off NGS
Shuts off door 4 galley chillers (AFT)
Outflow valves to 50/50 flow
Shuts off zonal dryer fans
26
Q

Pressing FIRE/OVHT TEST switch:

A

Fire bell

Nose W/W horn (if on ground)

FIRE TEST IN PROG EICAS

Master WARNING lights

Engine fire switch lights

APU fire warning light

Cargo fire warning lights

Fuel control switch warning lights

Nose W/W APU FIRE warning light

27
Q

FIRE TEST FAIL EICAS

A

Fire test has failed

One of the following indicated as reason:

DET FIRE ENG L/R

DET FIRE APU

DET FIRE CARGO (FWD or AFT)

DET FIRE WHEEL WELL

28
Q

Hold fire test switch until:

A

FIRE TEST PASS

or

FIRE TEST FAIL

B787 (22 decks)

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