B737 System Validation Question Bank - Fire Protection R1

Front 1

1. How is an EGN OVERHEAT condition indicated?
a. MASTER CAUTION, OVHT/DET annunciator & associated ENG OVERHEAT lights illuminate
b. MASTER CAUTION, FIRE WARN & associated ENG OVERHEAT lights illuminate
c. MASTER CAUTION, OVHT/DET annunciator, FAULT & associated ENG OVERHEAT lights illuminate

Back 1

a. MASTER CAUTION, OVHT/DET annunciator & associated ENG OVERHEAT lights illuminate

Front 2

2. What does an illuminated fire control panel FAULT light indicate when no fire test is being performed?
a. Single loop failure on an engine regardless of which loop or loops are selected
b. Both loops on one engine have failed in the dual loop position (NORMAL) or selected single loop on an engine has failed.
c. The fault detection system is inoperative

Back 2

b. Both loops on one engine have failed in the dual loop position (NORMAL) or selected single loop on an engine has failed.

Front 3

3. The FAULT light illuminates on the engine fire control panel with no fire test being performed. Are there any other lights or indications?
a. Yes, MASTER CAUTION & respective OVERHEAT lights illuminate
b. Yes, MASTER CAUTION & OVHT/DET annunciator lights illuminate
c. No, No additional indications are triggered with a FAULT light on

Back 3

c. No, No additional indications are triggered with a FAULT light on

Front 4

4. What are the power sources for engine fire detection & extinguishing?
a. Detection and extinguishing; Hot Battery bus
b. Detection and extinguishing; Battery bus
c. Detection – Battery bus; extinguishing – Hot Battery bus

Back 4

c. Detection – Battery bus; extinguishing – Hot Battery bus

Front 5

5. Which statement regarding the engine fire extinguisher bottles is correct?
a. Two bottles available for either engine
b. Two bottles, each bottle discharges only to respective engine
c. Three bottles available for either engine

Back 5

a. Two bottles available for either engine

Front 6

6. How is the squib on an engine fire extinguisher bottle armed?
a. Silencing the fire bell arms the squib
b. Illumination of the fire switch light arms the squib
c. An OVERHEAT warning arms the squib
d. Pulling the fire switch arms the squib

Back 6

d. Pulling the fire switch arms the squib

Front 7

7. How are the engine fire warning switches (red handles) released?
a. Released only by a fire or manually
b. Released only by a fire or overheat
c. Released by overheat fire or manually

Back 7

a. Released only by a fire or manually

Front 8

8. How is the engine fire extinguisher bottle discharged?
a. Pull illuminated fire warning switch up
b. Pull illuminated fire warning switch up, rotate either to the left or right
c. Push the discharge button underneath the fire switch

Back 8

b. Pull illuminated fire warning switch up, rotate either to the left or right

Front 9

9. What does an illuminated BOTTLE DISCHARGED light indicate?
a. Extinguisher bottle has discharged
b. Impending extinguisher bottle discharge due to over temperature
c. Extinguisher bottle has been armed

Back 9

a. Extinguisher bottle has discharged

Front 10

10. What is the function of the OVHT/FIRE position of the FIRE TEST switch? (Normal AC Power on the generator buses)
a. Tests all the fire & overheat loops and extinguisher squib units
b. Test all aircraft fire and overheat loops
c. Tests only engine fire and overheat detector loops

Back 10

b. Test all aircraft fire and overheat loops

Front 11

11. During an extinguisher system test (squib test) what does an engine fire extinguisher illuminated green EXT TEST light indicate?
a. Discharge circuit test is normal for respective extinguisher circuit
b. Discharge circuit has been armed for respective extinguisher botter
c. Respective discharge circuit has fired the squib

Back 11

a. Discharge circuit test is normal for respective extinguisher circuit

Front 12

12. Which statement describes the APU fire detection system?
a. Single loop system for fire or fault detection
b. Single AC powered loop for fire, overheat or fault detection
c. Dual loop system-for overheat, fire and fault detection

Back 12

a. Single loop system for fire or fault detection

Front 13

13. What does an illuminated APU DET INOP light indicate when no fire warning test is being performed?
a. Failure in the APU A & B detector loops
b. Failure in the APU fire detector loop
c. Failure in the APU overheat & fire loops

Back 13

b. Failure in the APU fire detector loop

Front 14

14. What occurs when an APU fire condition is detected? (cockpit only)
a. APU fire warning & master FIRE warning lights illuminate and the APU continues to run
b. APU fire warning & master FIRE warning lights illuminate and APU extinguisher discharges automatically
c. APU fire warning & master FIRE warning lights illuminate and fire bell sounds in cockpit and APU shuts down

Back 14

c. APU fire warning & master FIRE warning lights illuminate and fire bell sounds in cockpit and APU shuts down

Front 15

15. What are the initial indications of a fire at the APU Ground Control Panel? (ON THE GROUND)
a. Steady Fire Warning light and fire bell
b. Steady Fire Warning light and horn
c. Flashing Fire Warning light and intermittent horn

Back 15

c. Flashing Fire Warning light and intermittent horn

Front 16

16. In the event of an APU fire warning, what occurs when a cockpit FIRE warning bell cut-out switch or the APU Ground Control Panel (GCP) HORN CUTOUT button is pressed?
a. Extinguisher circuit is armed, cockpit fire bell and GCP horn are silenced
b. Cockpit fire bell and GCP horn are silenced, GCP light illuminated steady
c. Cockpit fire bell and GCP horn are silenced, GCP light is extinguished

Back 16

b. Cockpit fire bell and GCP horn are silenced, GCP light illuminated steady

Front 17

17. How is the APU extinguisher bottle discharged from APU Ground Control Panel?
a. Pull fire control handle, then activate discharge switch
b. Push horn cutoff switch, then pull fire control handle
c. Activate discharge switch, then pull fire control handle

Back 17

a. Pull fire control handle, then activate discharge switch

Front 18

18. Which describes the WHEEL WELL fire warning system?
a. Batter bus powers a single loop detector
b. Hot battery bus powers a single loop detector
c. No. 1 AC Transfer bus powers single loop detector

Back 18

c. No. 1 AC Transfer bus powers single loop detector

Front 19

19. How is a WHEEL WELL fire indicated?
a. WHEEL WELL FIRE warning light illuminate with no master FIRE warning
b. WHEEL WELL fire, master FIRE warning, and overheat lights illuminate with no aural warning
c. WHEEL WELL fire & master FIRE warning lights illuminate with steady fire bell

Back 19

c. WHEEL WELL fire & master FIRE warning lights illuminate with steady fire bell

Front 20

20. A smoke detection and fire suppression system is installed in the cargo compartment of the B737-300 and -500 aircraft.
a. True
b. False

Back 20

a. True

Front 21

21. How is discharge of a lavatory fire extinguisher determined?
a. Temperature indicators change to white
b. Bottle nozzle tips change to an aluminum color
c. Temperature indicators change to an aluminum color

Back 21

b. Bottle nozzle tips change to an aluminum color

Front 22

22. When the fire control panel test switch is placed to the FAULT / INOP position, which lights should illuminate?
a. Two MASTER CAUTIONS & annunciation OVHTIDET
b. FAULT light
c. APU DET INOP
d. Two MASTER CAUTION lights, the OVHTIDET annunciator, the FAULT light and the APU DET/INOP light

Back 22

d. Two MASTER CAUTION lights, the OVHTIDET annunciator, the FAULT light and the APU DET/INOP light

Front 23

23. If, during the FAULT / INOP test the FAULT light does not come on:
a. The engine fire detector test is normal
b. The engine fault detection system has failed
c. An engine fire loop(s) has failed

Back 23

b. The engine fault detection system has failed

Front 24

24. The engine fire panel FAULT light illuminates during an overheat/fire test. This indicates:
a. At least one engine has a faulty loop
b. A fault in both loops of one engine
c. A fault in both loops of both engines

Back 24

a. At least one engine has a faulty loop

Front 25

25. On arrival at the aircraft you find the FAULT light illuminated prior to any system test. The loop selector switches are in the NORMAL position. Both fire warning loops on – on engine have failed.
a. True
b. False

Back 25

a. True

Front 26

26. In flight with dual loop configuration selected, you observe the FAULT light illuminated on the fire warning panel. What has happened?
a. One loop on both engines has failed
b. One loop on an engine has failed
c. Both loops on one engine have failed

Back 26

c. Both loops on one engine have failed

Front 27

27. Engine fire detection is powered from the:
a. Hot Battery bus
b. Main Bus 1
c. Standby DC bus
d. Battery bus

Back 27

d. Battery bus

Front 28

28. Engine and APU fire extinguishing is powered from the:
a. Ground Service Bus
b. Standby DC bus a
c. Hot Battery Bus
d. Battery bus

Back 28

c. Hot Battery Bus

Front 29

29. If a fire is detected in the APU, the APU shuts down, the fire bottle discharges, and the fire bell silences after the fire bottle is discharged automatically.
a. True
b. False

Back 29

b. False

Front 30

30. The WHEEL WELL fire detection system is DC powered.
a. True
b. False

Back 30

b. False

Front 31

31. In flight, what happens if a single engine fire detector loop fails during dual loop operation?
a. The FAULT light illuminates
b. The loop is automatically deselected and fire warning capability is not lost on that engine
c. The pilot must manually deselect the failed loop with the “OVRHT DET” switch to maintain fire warning capability
d. The master fire warning light illuminates

Back 31

b. The loop is automatically deselected and fire warning capability is not lost on that engine

Front 32

32. OVRHT/DET annunciator and the MASTER CAUTION lights are (triggered) by:
a. The APU DET INOP light or an engine OVERHEAT light
b. The engine fire detector FAULT light
c. A green bottle discharge light

Back 32

a. The APU DET INOP light or an engine OVERHEAT light

Front 33

33. The Fire control panel FAULT light illuminates
a. During an OVHT / FIRE test if both loops are good
b. Anytime one fire detector loop on one engine malfunctions in the dual loop configuration
c. During the FAULT / INOP test
d. All answers are correct

Back 33

c. During the FAULT / INOP test

Front 34

34. During the OVHTIFIRE test, the APU fire warning light in the wheel well:
a. Shows a steady amber light
b. Illuminates flashing
c. Remains off

Back 34

b. Illuminates flashing

Front 35

35. During the EXTINGUISHER TEST, what do the illuminated green lights on the Overheat/Fire protection panel indicate?
a. Discharge of the respective engine or APU fire extinguisher bottle
b. Discharge of the respective lavatory cabinet fire extinguisher
c. Crew oxygen cylinder thermal discharge
d. The fire extinguisher discharge circuits are functional

Back 35

d. The fire extinguisher discharge circuits are functional

Front 36

36. When the lavatory smoke detectors are activated, the FIRE WARN, MASTER CAUTION, and fire annunciator lights illuminate, and the fire bell sounds on the flight deck.
a. True
b. False

Back 36

b. False

Front 37

37. The cargo compartment smoke detector and fire suppression system must be verified to be serviced and operational before cargo can be carried in the cargo compartments.
a. True
b. False

Back 37

a. True

Front 38

38. After activation of the cargo fire suppression system the aircraft must land at the nearest suitable airport within _____ minutes of the activation.
a. 60 minutes
b. 45 minutes
c. 30 minutes
d. 15 minutes

Back 38

a. 60 minutes

Front 39

39. The wheel well detection system displays warnings for _______.
a. Fire or fault
b. Fire or overheat
c. Fire, fault or overheat
d. Fire

Back 39

d. Fire

Front 40

40. There is no fire extinguisher system for the wheel well area.
a. True
b. False

Back 40

a. True

Front 41

41. There is no FAULT warning for a failure of the wheel well fire detector.
a. True
b. False

Back 41

a. True

Front 42

42. The power to the fire extinguisher bottle squibs is provided by the
a. Battery Bus
b. Number one DC Bus
c. Hot Battery Bus

Back 42

c. Hot Battery Bus

Front 43

43. How is the engine overheat and fire detector system normally operated?
a. As a single-loop system: A for odd & B for even numbered flights
b. As a single-loop system: B for odd & A for even numbered flights
C. Doesnt really matter, as long as it's on.
D. Who cares, go have a drink!

Back 43

a. As a single-loop system: A for odd & B for even numbered flights

Front 44

These Cards are not verified accurate. Please, If you find a mistake, email
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Back 44

Check back for future revisions!