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United B737 (pitu) > Fire System > Flashcards

Fire System Flashcards

1
Q

Which of the following areas have fire detection and extinguishing systems?
() Engines, APU, Lavatories, Cargo Compartments
() Engines, APU, Lavatories, Cargo Compartments, Main Gear Wheel Well
() Engines, APU, Cargo Compartments, Galleys

A

Engines, APU, Lavatories, Cargo Compartments

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2
Q

If one engine overheat and fire detection loop fails with the OVHT DET switch in normal _____________.
() the fault light illuminates and the OVHT DET switch must be placed to the operative loop
() the fault light illuminates and the OVHT DET switch must be placed to the inoperative loop
() the failed loop is automatically deactivated and the remaining loop functions as a single loop detector

A

the failed loop is automatically deactivated and the remaining loop functions as a single loop detector

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3
Q

With the OVHT DET switch selected to A, what does an illuminated amber FAULT light on the overheat fire protection panel indicate?
() the wheel well fire detection system has failed
() the A detector loop for an engine has failed
() the A circuit continuity has failed for the respective fire extinguisher bottle

A

the A detector loop for an engine has failed.

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4
Q

If both MASTER CAUTION lights, the OVHT/DET system annunciator light, and the related ENG OVERHEAT light illuminate, what has occurred?
() An APU overheat
() An engine fire loop has failed
() An engine overheat

A

An engine overheat

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5
Q

What are the indications of an engine fire?
() The fire warning bell sounds, both master FIRE WARNING lights illuminate, the related engine fire warning switch illuminates
() All related engine overheat alert indications illuminate
() all answers are correct

A

all answers are correct

The fire warning bell sounds, both master FIRE WARNING lights illuminate, the related engine fire warning switch illuminates

All related engine overheat alert indications illuminate

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6
Q

How are the engine fire warning switches unlocked?
() Illumination of an engine fire warning switch, illumination of an ENG OVERHEAT light, or manually by pushing the fire warning switch override
() Illumination of an engine fire warning switch, illumination of an ENG OVERHEAT light, or by manually pulling the fire warning switch with more than 35 lbs of force
() all answers are correct

A

Illumination of an engine fire warning switch, illumination of an ENG OVERHEAT light, or manually by pushing the fire warning switch override

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7
Q

Pulling the engine fire warning switch up ___________.
() disables all fuel pumps
() deactivates the respective electric hydraulic pump
() closes both the engine fuel shutoff valve at the HMU and the spar fuel shutoff valve

A

closes both the engine fuel shutoff valve at the HMU and the spar fuel shutoff valve

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8
Q

Pulling the engine fire warning switch up ___________.
() all answers are correct
() closes the hydraulic fluid shutoff valve and deactivates the engine driven hydraulic pump LOW PRESSURE light
() deactivates the respective electric hydraulic pump

A

closes the hydraulic fluid shutoff valve and deactivates the engine driven hydraulic pump LOW PRESSURE light.

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9
Q

During the Extinguisher test, positioning the EXT TEST Switch to 1 or 2 verifies circuit continuity from the squib to __________.
() both engines and APU fire switches
() the duct overheat circuitry
() the two engine fire switches, the APU must be tested separately

A

both engines and APU fire switches.

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10
Q

Placing the Fault/Inoperative (FAULT/INOP) and Overheat/Fire (OVHT/FIRE) TEST Switch to the OVHT/FIRE position __________.
() tests overheat and fire detection loops on both engines and APU, and wheel well fire detector
() tests overheat and fire detection loops on both engines and APU and not the wheel well fire detector
() tests overheat and fire detection loop on the wheel well fire detector only

A

tests overheat and fire detection loops on both engines and APU, and wheel well fire detector

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11
Q

An illuminated APU Fire Warning Switch, in the down position, indicates a fire in the APU, and _________.
() unlocks the APU fire warning switch
() arms the APU squib
() all answers are correct

A

unlocks the APU fire warning switch

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12
Q

During a number 1 engine overheat, which lights will illuminate?
() ENG 1 OVERHEAT, MASTER CAUTION, and OVHT/DET system annunciator
() ENG 1 OVERHEAT, and the MASTER CAUTION
() ENG 1 OVERHEAT, MASTER CAUTION, OVHT/DET system annunciator, and the MASTER FIRE WARNING

A

ENG 1 OVERHEAT, MASTER CAUTION, and OVHT/DET system annunciator

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13
Q

An illuminated red WHEEL WELL Fire Warning Light indicates ________.
() a fire in the main gear wheel and/or a fire in the nose wheel well
() a fire in the main gear wheel and/or a fire in the nose wheel well, and arms the squib
() a fire in the main gear wheel well

A

A fire in the main gear wheel well

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14
Q

What does an illuminated engine BOTTLE DISCHARGE light indicate?
() the related fire extinguisher bottle has been armed and is ready for discharge
() the related fire extinguisher bottle has discharged
() there is a fault in the fire protection system and the bottle cannot be discharged

A

the related fire extinguisher bottle has discharged

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15
Q

What does an illuminated APU BOTTLE DISCHARGE light indicate?
() there is a fault in the fire protection system and the bottle cannot be discharged
() the APU extinguisher bottle has been armed and is ready for discharge
() the APU extinguisher bottle has discharged

A

the APU extinguisher bottle has discharged

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16
Q

Does pushing the Master Fire Warning (FIRE WARN BELL CUTOUT) on the glareshield have the same results as pushing the fire warning bell cutout switch on the overheat/fire protection panel?
() Yes
() No

A

yes

17
Q

Should the FAULT light illuminate when the FAULT/INOP and OVHT/FIRE TEST Switch is placed in the OVHT/FIRE position?
() Yes
() No

A

no

18
Q

The APU ground control panel is located in the __________ and contains an APU fire warning light, an APU BOTTLE DISCHARGE switch, an APU fire control handle, and an APU HORN CUTOUT switch.
() water servicing panel
() main wheel well
() nose wheel well

A

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main wheel well

19
Q

When the Cargo Fire TEST Switch is pushed, _________.
() only one Extinguisher (EXT) Test Light should illuminate green
() the green Extinguisher (EXT) Test Lights should NOT illuminate
() both Extinguisher (EXT) Test Lights should illuminate green

A 
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both Extinguisher (EXT) Test Lights should illuminate green
20
Q

With the Detector Select (DET SELECT) Switches in NORM, _______.
() detection loop A is active on the ground while only B is active in the air
() detection loop B is the only loop active on the ground while both A and B are active in the air
() detection loop A and B are active

A

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detection loop A and B are active

21
Q

What light illuminates when both loops in one or both cargo compartments have failed?
() DETECTOR FAULT
() DISCH
() FIRE WARNING LIGHT

A

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DETECTOR FAULT

22
Q

Pushing the FWD Cargo Fire ARM Switch _________.
() arms the extinguisher for the forward cargo compartment
() arms the extinguisher for the forward cargo compartment and discharges the first bottle
() arms the extinguisher for the both cargo compartments

A

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arms the extinguisher for the forward cargo compartment

23
Q

An illuminated Cargo Fire Bottle Discharge (DISCH) light _________.
() only illuminates after both extinguisher bottles have discharged
() indicates either extinguisher bottle has discharged
() on the ground indicates there is a system fault

A

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indicates either extinguisher bottle has discharged

24
Q

What is the flight deck indication when smoke is detected in the lavatory?
() There is no flight deck indication
() Both red FIRE WARN lights illuminate
() Both red FIRE WARN lights illuminate and the FIRE BELL sounds.

A

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There is no flight deck indication

25
Q

During a preflight inspection, what color on the lavatory fire extinguisher would indicate that the heat activated nozzle has been discharged?

() Aluminum

() Flat Black

() Red

A

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Aluminum

26
Q

On the B737-800, after the cargo fire system is armed, if the cargo fire discharge (DISCH)switch is pushed, the first extinguisher bottle is discharged.

() A timer is then set for 60 minutes to just charge the second bottle automatically.

() The second bottle must be discharged manually after 60 minutes.

() The second bottle must be discharged to manually after 15 minutes.

A

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A timer is then set for 60 minutes to just charge the second bottle automatically.

27
Q

There are ______ fire extinguisher bottle(s) installed for the cargo component fire suppression system.

2
3
4

A

2

28
Q

What additional indications of an APU fire occur on the ground?

() The wheel well APU fire warning horn sounds.

() The FAULT light illuminates.

()The APU extinguisher bottle automatically discharges.

A

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The wheel well APU fire warning horn sounds.

29
Q

Engine overheat and fire detection is powered by the_____?

Battery bus

Hot battery bus

AC transfer bus #1

A

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Battery bus

30
Q

With the OVHT DET in normal, what does an illuminated amber FAULT light on the overheat fire protection panel indicate?

() one detector loop for an engine has failed

()The wheel well fire detection system has failed

()both detector loops for an engine have failed

A

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both detector loops for an engine have failed

31
Q

Pushing the fire warning bell cutout switch, extinguishes both master FIRE WARN lights, silences the fire warning bell and_____.

()Resets the system for additional warnings

()silences the altitude warning horn

()allows the engine fire warning switch to be rotated for discharge

A

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Resets the system for additional warnings

32
Q

Placing the Fault/Inoperative (FAULT/INOP) and Overheat/Fire (OVHT/FIRE) TEST Switch to the FAULT/INOP position __________.

()tests the fault detection circuits for both engines

() tests the fault detection circuits for both engines and Apu

()tests the fault detections circuits for the Apu

A

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tests the fault detection circuits for both engines and Apu

33
Q

What does an illuminated APU DET INOP light indicate?

()The Apu bleed air is inoperative

()Apu detector loop has failed

()Apu Dior failed to close during shutdown

A

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Apu detector loop has failed

United B737 (pitu) (17 decks)

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