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737 > Fire Protection / Warning Systems > Flashcards

Fire Protection / Warning Systems Flashcards

1
Q

Conditions that trigger a takeoff configuration warning

A
  • TE Flaps are not in flaps 1 through 25 range
  • TE Flaps are in an asymmetry condition, or have uncommanded motion
  • LE Devices are not configured for takeoff or have uncommanded motion
  • Speed Brake lever is not in the DOWN position
  • Spoiler control valve is open providing hyd pressure to the ground spoiler interlock valve
  • Parking Brake is set
  • Stab trim is not in T/O range
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2
Q

Landing Gear warning horn is activated when:

A

Any gear not down and locked with:

  • Flaps up through 10
  • Altitude below 800’ RA
  • Either forward thrust lever set between idle and approx 20° thrust lever angle
  • With an engine not operating, with the other thrust lever set less than 34°
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3
Q

Fire detection and extinguishing systems are located at which of the following areas?

A

• Engines, APU, Lavatories, Cargo Compartments

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4
Q

The _________ powers engine overheat and fire detection:

A

• battery bus

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5
Q

What happens when the engine fire warning switch is pulled up?

A
  • Closes fuel, hydraulic shutoff, and engine bleed air valves
  • Disables the reverser, trips the respective generator control circuit breaker, and deactivates the engine-driven hydraulic pump.
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6
Q

When the FAULT/INOP and OVHT/FIRE TEST Switch is placed in the OVHT/FIRE position, should the FAULT light illuminate?

A

No

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7
Q

If you are on the ground, what additional indications of an APU fire occur?

A

• the wheel well APU fire warning horn sounds

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8
Q

The APU ground control panel contains an APU fire warning light, an APU BOTTLE DISCHARGE switch, an APU fire control handle, and an APU HORN CUTOUT switch and is located in the:

A

Maine wheel well

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9
Q

The Cargo Compartment Fire Suppression System contains how many fire extinguisher bottle(s)?

A

2

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10
Q

What should happen when pushing the Cargo Fire TEST Switch?

A

both Extinguisher (EXT) Test Lights should illuminate green

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11
Q

If the Overheat Detector Select (OVHT DET) switches is in the NORMAL position, _______.

A

detection loop A and B are active

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12
Q

The ______light illuminates when both loops in one or both cargo compartments have failed.

A

DETECTOR FAULT

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13
Q

If the Cargo Fire Bottle Discharge (DISCH) light is illuminated (amber), what does it mean?

A

indicates either extinguisher bottle has discharged

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14
Q

What happens on the B737-800, after the Cargo Fire System is armed, if the Cargo Fire Discharge (DISCH) Switch is pushed, and the first extinguisher bottle is discharged?

A

A timer is then set for 60 minutes to discharge the second bottle.

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15
Q

When smoke is detected in the lavatory, what is the flight deck indication?

A

There is no flight deck indication

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16
Q

The Lavatory Fire Extinguisher would indicate what color to indicate that the Heat Activated Nozzle has been discharged?

A

Aluminum

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17
Q

With the If the OVHT DET switch is in normal and one engine overheat and fire detection loop fails, what happens?

A

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

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18
Q

What does an illuminated amber FAULT light on the overheat fire protection panel indicate with the OVHT DET switch in normal?

A

both detector loops for an engine have failed

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19
Q

What does an illuminated amber FAULT light on the overheat fire protection panel indicate with the OVHT DET switch selected to A?

A

the A detector loop for an engine has failed

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20
Q

A _____ has occurred if both MASTER CAUTION lights, the OVHT/DET system annunciator light, and the related ENG OVERHEAT light illuminate.

A

An engine overheat

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21
Q

The indications of an engine fire are:

A
  • All related engine overheat alert indications illuminate
  • The fire warning bell sounds, both master FIRE WARNING lights illuminate, the related engine fire warning switch illuminates
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22
Q

The engine fire warning switches are unlocked by?

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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23
Q

What occurs to the engine fuel system when pulling the engine fire warning switch up?

A

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

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24
Q

What occurs to the respective hydraulic system when pulling the engine fire warning switch up?

A

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

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25
Q

When the Fire Warning BELL CUTOUT Switch is pushed it extinguishes both master FIRE WARN lights, silences the fire warning bell and ___________.

A

resets system for additional warnings

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26
Q

When positioning the EXT TEST Switch to 1 or 2, circuit continuity from the squib to __________ is verified.

A

both engines and APU fire switches

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27
Q

What happens when placing the Fault/Inoperative (FAULT/INOP) and Overheat/Fire (OVHT/FIRE) TEST Switch to the FAULT/INOP position?

A

tests the fault detection circuits for both engines and the APU

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28
Q

What happens when placing the Fault/Inoperative (FAULT/INOP) and Overheat/Fire (OVHT/FIRE) TEST Switch to the OVHT/FIRE position?

A

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

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29
Q

What happens when there is an illuminated APU Fire Warning Switch, in the down position?

A

unlocks the APU fire warning switch

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30
Q

_____lights will illuminate during a number 1 engine overheat.

A

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

31
Q

What does an illuminated red WHEEL WELL Fire Warning Light indicate?

A

a fire in the main gear wheel well

32
Q

An illuminated engine BOTTLE DISCHARGE light indicates_____.

A

the related fire extinguisher bottle has discharged

33
Q

An illuminated APU DET INOP light indicates_____.

A

APU detector loop has failed

34
Q

An illuminated APU BOTTLE DISCHARGE light indicates_____.

A

the APU extinguisher bottle has discharged

35
Q

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.

A

True

36
Q

What happens when pushing the FWD Cargo Fire ARM Switch?

A

arms the extinguisher for the forward cargo compartment

37
Q

What happens when pressing either MASTER CAUTION light after both lights are extinguished?

A

resets the annunciator light for further cautions

38
Q

Single failures in dual/redundant systems do not illuminate MASTER CAUTION light. How do you recall the system failure?

A

pressing either system annunciator light panel

39
Q

If ____________________are pressed, both Master Fire Warning lights are extinguished, the fire warning bell is silenced, and the system is reset for additional warnings.

A

either MASTER FIRE WARNING light or the fire warning bell cutout switch

40
Q

What do the Cabin Altitude and Takeoff Configuration Warnings commonly use when activated?

A

the same intermittent tone

41
Q

What conditions cause the takeoff configuration warning horn to sound?

A

• Trailing edge flaps skew or asymmetry, speed brake lever not in the DOWN position,
or spoiler control valve is open providing pressured hydraulic fluid to the ground spoiler interlock valve
• Stabilizer trim not set in the takeoff range, flaps not in the takeoff range, LE devices are not configured for takeoff, or the parking brake is set.

42
Q

What happens anytime the aircraft is below 800 feet RA, in landing configuration and any gear not down and locked?

A

A steady horn sounds

43
Q

During which conditions does pushing the Landing Gear Warning Cutout Switch silence landing gear configuration warning aural?

A

flaps up through 10 and below 800 feet RA

44
Q

What does the The Proximity Switch Electronic Unit (PSEU) monitor?

A
  • takeoff and landing configuration warnings

* landing gear and air / ground sensing

45
Q

On the ground, what does an illuminated Proximity Switch Electronic Unit (PSEU) indicate.

A

a fault is detected in the PSEU, or an overwing exit flight lock fails to disengage when commanded

46
Q

The Proximity Switch Electronic Unit (PSEU) _____________ in flight.

A

is inhibited from thrust lever advance for takeoff until 30 seconds after landing

47
Q

As the throttles are advanced, what does it mean if the Takeoff Configuration Warning Light illuminates red?

A

the airplane is not configured correctly for takeoff

48
Q

What does an illuminated Cabin Altitude Warning Light indicates?

A

at 10,000 feet if the cabin has not been pressurized

49
Q

What happens when the maximum operating airspeed of Vmo/Mmo is exceeded?

A

the Mach / airspeed warning system provides an aural warning (clacker)

50
Q

The indication of an impending stall is_____?

A

an artificial stall warning device (stick shaker)

51
Q

Which is true in regard to the MACH AIRSPEED WARNING TEST switches and the STALL WARNING TEST switches?

A

are inhibited while airborne

52
Q

When is altitude alerting inhibited?

A

when the trailing edge flaps are extended to 25 or greater, or while G/S is captured

53
Q

At what point prior to reaching the selected altitude does a white box shows around the selected altitude display, the box around the current altitude becomes bold and a momentary tone sounds?

A

900’

54
Q

If the selected altitude is deviated by ____ feet, a momentary tone sounds, the current altitude box turns amber and ____________.

A

300; begins to flash

55
Q

What inhibits Ground Proximity Warning System look ahead terrain and radio altitude based alerts?

A

actual windshear warning

56
Q

Approximately how far from the projected impact will the look ahead terrain alert “Terrain, terrain, pull up” sound with the terrain shown in solid red on the navigation display?

A

20 to 30 secs

57
Q

Approximately how far from projected impact will the look ahead terrain alert “Caution, terrain” will sound with terrain shown in solid amber on the navigation display?

A

40 to 60 secs

58
Q

In what speed realm does “Too low, terrain” aural alert occurs if the aircraft is at an unsafe terrain clearance with either the landing gear not down or flaps not in the landing configuration?

A

high speed

59
Q

If the aircraft experiences excessive altitude loss after a takeoff or go-around, the “__________” aural alert occurs.

A

“DON’T SINK”

60
Q

The Volume and repetition of the “GLIDESLOPE” aural alert rate _____________ as deviation _______________ below the glideslope.

A

increase; increase

61
Q

When are new predictive windshear warning alerts are inhibited During takeoff and landing?

A

between 100 knots and 50 ft RA

62
Q

What does an illuminated Inoperative (INOP) light on the Ground Proximity panel alert the pilot to?

A

a GPWS computer malfunction or power loss has occurred.

63
Q

In flight, the Ground Proximity System Test (SYS TEST) Switch is ______.

A

inhibited

64
Q

What does placing the Ground Proximity FLAP INHIBIT Switch to FLAP INHIBIT, inhibit?

A

ground proximity TOO LOW FLAPS alert

65
Q

What does placing the Ground Proximity TERRAIN INHIBIT Switch to TERRAIN INHIBIT, inhibit?

A

look-ahead terrain alerts and terrain displays

66
Q

When does the weather radar automatically begins scanning for windshear?

A

all answers are correct

67
Q

A(n) ____________ aural and a message is annunciated on the traffic display for Traffic advisories.

A

“TRAFFIC TRAFFIC”

68
Q

Resolution advisories provide ________and an aural warning to maintain or increase separation from traffic.

A

maneuver guidance

69
Q

What does placing the Transponder Mode Selector to TA (traffic advisory) ONLY do?

A

enables the display of traffic advisory targets

70
Q

What does placing the Transponder Mode Selector to TA/RA do?

A

enables the display of traffic advisory targets and resolution advisory (RA) targets

71
Q

What does pressing the Absolute Altitude Display Selector on the TCAS Controls (Transponder Panel) do?

A

displays absolute altitude of TCAS targets

72
Q

In which TCAS Altitude Range Switch position sets TCAS display from 2700 feet below to 7000 feet above own aircraft?

A

Above (ABV)

73
Q

On the cartridge assembly (Tail Skid) on the -800 and -900 series, if the warning decal is ______, the cartridge must be replaced.

A

all red

737 (19 decks)

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