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United 737 Systems Validation Study Guide (26 July 2021) > Engines/APU > Flashcards

Engines/APU Flashcards

1
Q
  1. When must Engine Ignition be on:
A
  1. When must Engine Ignition be on:

all answers are correct

• Takeoff and Landing
• Engine Anti-Ice Operation and Heavy Rain

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2
Q
  1. The maximum allowable EGT for Engine Start is_______.
A
  1. The maximum allowable EGT for Engine Start is_______.

725°C

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3
Q
  1. An Amber Arc on an Engine Limit Display indicates______.
A
  1. An Amber Arc on an Engine Limit Display indicates______.

Cautionary range

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4
Q
  1. On the B737-800, what is the maximum altitude that the APU can supply electrical power and bleed air up to?
A
  1. On the B737-800, what is the maximum altitude that the APU can supply electrical power and bleed air up to?

10,000 ft.

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5
Q
  1. On the B737-800, what is the maximum altitude that the APU can supply bleed air alone up to?
A
  1. On the B737-800, what is the maximum altitude that the APU can supply bleed air alone up to?

17,000 ft.

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6
Q
  1. On the B737-800, What is the maximum altitude that the APU can supply electrical power alone up to?
A
  1. On the B737-800, What is the maximum altitude that the APU can supply electrical power alone up to?

41,000 ft.

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7
Q
  1. With the EEC in Normal Mode, if the thrust lever is advanced to the forward stop, what will the EEC do?
A
  1. With the EEC in Normal Mode, if the thrust lever is advanced to the forward stop, what will the EEC do?

limit thrust to the maximum certified thrust rating for current conditions

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8
Q
  1. On the engine panel on the aft overhead panel, when will both ON and ALTN be in view?
A
  1. On the engine panel on the aft overhead panel, when will both ON and ALTN be in view?

The EEC has automatically changed to the soft alternate mode

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9
Q
  1. Thrust rating shortfalls and exceedances _______ occur as flight conditions change, when the EEC is in soft alternate mode.
A
  1. Thrust rating shortfalls and exceedances _______ occur as flight conditions change, when the EEC is in soft alternate mode.

can

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10
Q
  1. In what mode does the EEC provides N1 and N2 redline overspeed protection in?
A
  1. In what mode does the EEC provides N1 and N2 redline overspeed protection in?

normal mode and alternate mode

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11
Q
  1. Which air source may the engines be started with?
A
  1. Which air source may the engines be started with?

• The APU or ground source
• The engine crossbleed

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12
Q
  1. On the B737-800 power is removed from the start switch holding the solenoid for starter cutout at approximately _____ N2 speed.
A
  1. Which air source may the engines be started with?

56%

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13
Q
  1. On the B737-800, what do the EECs monitor to detect during ground starts?
A
  1. On the B737-800, what do the EECs monitor to detect during ground starts?

all answers are correct

• impending hot starts and EGT start limit exceedances
• wet starts

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14
Q
  1. On the B737-800, a flashing white box surrounding the EGT during an engine start indicates_____.
A
  1. On the B737-800, a flashing white box surrounding the EGT during an engine start indicates_____.

• an impending hot start

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15
Q
  1. When the Engine Start Switch is placed in the GRD position, _____occurs.
A
  1. When the Engine Start Switch is placed in the GRD position, _____occurs.

• the starter valve opens, the engine bleed air valve closes
• the selected igniters(s) are energized when the engine start lever is placed to IDLE

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16
Q
  1. When the Engine Start Switch is placed in the CONT position, ______ occurs.
A
  1. When the Engine Start Switch is placed in the CONT position, ______ occurs.

Ignition is provided to the selected igniters when engine is operating, and engine start lever is in IDLE

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17
Q
  1. When the Engine Start Switch is placed in the FLT position, _____ occurs.
A
  1. When the Engine Start Switch is placed in the FLT position, _____ occurs.

Ignition is provided to the both igniters when engine is operating and engine start lever is in IDLE

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18
Q
  1. IGN L, is powered by AC transfer bus #1 for engine #1 and AC transfer bus #2 for engine #2. What is IGN R powered by for either engine?
A
  1. IGN L, is powered by AC transfer bus #1 for engine #1 and AC transfer bus #2 for engine #2. What is IGN R powered by for either engine?

AC standby bus

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19
Q
  1. _______occurs when the EEC detects an engine flameout.
A
  1. _______occurs when the EEC detects an engine flameout.

both engine igniters are activated

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20
Q
  1. X-BLD START above the N2 dial indicates ______.
A
  1. X-BLD START above the N2 dial indicates ______.

crossbleed air recommended for inflight start

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21
Q
  1. The thrust reversers can be deployed when ______________________ or when either radio altimeter sense less than 10 feet RA.
A
  1. The thrust reversers can be deployed when ______________________ or when either radio altimeter sense less than 10 feet RA.

the air / ground safety sensor is in the ground mode

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22
Q
  1. What does an amber REV displayed above the N1 gages on the center instrument panel indicate?
A
  1. What does an amber REV displayed above the N1 gages on the center instrument panel indicate?

the thrust reverser is moved from stowed position

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23
Q
  1. What does a green REV displayed above the N1 gages on the center instrument panel indicate?
A
  1. What does a green REV displayed above the N1 gages on the center instrument

the thrust reverser is deployed

24
Q
  1. _______thrust lever position will provide maximum reverse thrust.
A
  1. _______thrust lever position will provide maximum reverse thrust.

pulling beyond detent No. 2

25
Q
  1. In regard to the APU, what happens when moving the battery switch to OFF, on the ground or in flight?
A
  1. In regard to the APU, what happens when moving the battery switch to OFF, on the ground or in flight?

on the ground or inflight, causes an automatic shutdown of the APU

26
Q
  1. If the APU does not reach the proper speed with the proper acceleration rate within the time limit of the starter, _____ happens.
A
  1. If the APU does not reach the proper speed with the proper acceleration rate within the time limit of the starter, _____ happens.

the start cycle automatically terminates

27
Q
  1. On the B737-800, moving the APU switch to the OFF position trips the APU generator, closes the APU bleed air valve and extinguished the APU GEN OFF BUS light. When does shutdown occurs?
A
  1. On the B737-800, moving the APU switch to the OFF position trips the APU generator, closes the APU bleed air valve and extinguished the APU GEN OFF BUS light. When does shutdown occurs?

automatically after a 60 second delay

28
Q
  1. Operate the APU for ________ before using it as a bleed air source, in order to extend the service life of the APU.
A
  1. Operate the APU for ________ before using it as a bleed air source, in order to extend the service life of the APU.

one minute

29
Q
  1. On the B737-800, in flight, what happens if the APU is the only source for electrical power?
A
  1. On the B737-800, in flight, what happens if the APU is the only source for electrical power?

all galley busses are automatically shed

30
Q
  1. On the B737-800, the APU be operated with the blue Maintenance (MAINT) light illuminated.
A
  1. On the B737-800, the APU be operated with the blue Maintenance (MAINT) light illuminated.

True

31
Q
  1. On the B737-800, an amber APU OVERSPEED light is illuminated, this indicates ________, or the APU RPM limit has been exceed resulting in an automatic shutdown.
A
  1. On the B737-800, an amber APU OVERSPEED light is illuminated, this indicates ________, or the APU RPM limit has been exceed resulting in an automatic shutdown.

The overspeed shutdown protection feature has failed a self-test during normal APU shutdown

32
Q
  1. On the B737-800, the amber APU FAULT light illuminates______.
A
  1. On the B737-800, the amber APU FAULT light illuminates______.

anytime a malfunction exists causing the APU to automatically shutdown

33
Q
  1. On the B737-800, it is acceptable to have an APU LOW OIL PRESSURE light illuminated during APU start?
A
  1. On the B737-800, it is acceptable to have an APU LOW OIL PRESSURE light illuminated during APU start?

True

34
Q
  1. On the PFD/ND, where are the Secondary Engine Indications normally displayed?
A
  1. On the PFD/ND, where are the Secondary Engine Indications normally displayed?

Lower Display Unit

35
Q
  1. On the PFD/ND, how is low oil quantity indicated?
A
  1. On the PFD/ND, how is low oil quantity indicated?

in reversed video and LO (white)

36
Q
  1. On the PFD/ND, what does pushing the MFD Engine (ENG) switch do?
A
  1. On the PFD/ND, what does pushing the MFD Engine (ENG) switch do?

displays secondary engine indications on lower DU

37
Q
  1. Each Engine is equipped with a thrust reverser that is operated________.
A
  1. Each Engine is equipped with a thrust reverser that is operated________.

hydraulically

38
Q
  1. In the event of incomplete stowage or uncommanded movement of the thrust reverser sleeve toward the deployed position, what will open the isolation valve and command the control valve to stow the thrust reverser?
A
  1. In the event of incomplete stowage or uncommanded movement of the thrust reverser sleeve toward the deployed position, what will open the isolation valve and command the control valve to stow the thrust reverser?

auto-restow circuit

39
Q
  1. N1 reference bugs and readouts can be manually set by______.
A
  1. N1 reference bugs and readouts can be manually set by______.

By turning the N1 SET inner knob when the N1 SET outer knob is set to BOTH, 1, or 2.

40
Q
  1. ________condition(s) would cause an amber Engine Fail (ENG FAIL) Alert.
A
  1. ________condition(s) would cause an amber Engine Fail (ENG FAIL) Alert.

Engine N2 below sustainable idle (50% N2) and engine start lever in IDLE position

41
Q
  1. A red N2 RPM display indicates______.
A
  1. A red N2 RPM display indicates______.

An operating limit is being exceeded

42
Q
  1. A steady illuminated amber START VALVE OPEN Alert light indicates_______.
A
  1. A steady illuminated amber START VALVE OPEN Alert light indicates_______.

The respective engine start valve is open and air is supplied to the starter

43
Q
  1. An illuminated amber REVERSER light on the aft overhead panel indicates______.
A
  1. An illuminated amber REVERSER light on the aft overhead panel indicates______.

all answers are correct

• The isolation valve or thrust reverser control valve is not in commanded position, one or more thrust reversers sleeves are not in commanded state, or a failure has been detected in synchronization shaft lock circuitry
• The auto-restow circuit has been activated

44
Q
  1. An illuminated amber ENGINE CONTROL light on the aft overhead panel indicates____.
A
  1. An illuminated amber ENGINE CONTROL light on the aft overhead panel indicates____.

The engine control system is not dispatchable due to faults in the system

45
Q
  1. Moving the Engine Start Lever to IDLE ______________, energizes ignition system through EECs; electrically opens spar fuel shutoff valve in the wing leading edge, outboard of the pylon.
A
  1. Moving the Engine Start Lever to IDLE ______________, energizes ignition system through EECs; electrically opens spar fuel shutoff valve in the wing leading edge, outboard of the pylon.

Electrically opens engine-mounted fuel shutoff valve

46
Q
  1. ________ is the Maximum continuous engine oil temperature.
A
  1. ________ is the Maximum continuous engine oil temperature.

140°C

47
Q
  1. The minimum engine oil quantity prior to engine start is_____.
A
  1. The minimum engine oil quantity prior to engine start is_____.

70%

48
Q
  1. It is required to all an engine to remain at idle for __ minute(s) before changing thrust lever position when ambient temperatures are below -35° C.
A
  1. It is required to all an engine to remain at idle for __ minute(s) before changing thrust lever position when ambient temperatures are below -35° C.

2

49
Q

(NOTE: This question is not in SV Study Guide but does appear in the B737 Engines/APU Quiz V4)

xx. On the B737-800, where is engine vibration displayed?

A

(NOTE: This question is not in SV Study Guide but does appear in the B737 Engines/APU Quiz V4)

xx. On the B737-800, where is engine vibration displayed?

Secondary Engine Display on the Lower Display Unit

50
Q

(NOTE: This question is not in SV Study Guide but does appear in the B737 Engines/APU Quiz V4)

xx. On the B737-800, what is minimum oil quantity prior to engine start?

A

(NOTE: This question is not in SV Study Guide but does appear in the B737 Engines/APU Quiz V4)

xx. On the B737-800, what is minimum oil quantity prior to engine start?

70%

51
Q

(NOTE: This question is not in SV Study Guide but does appear in the B737 Engines/APU Quiz V4)

xx. What does a steady illuminated amber LOW OIL PRESSURE Alert light indicate?

A

(NOTE: This question is not in SV Study Guide but does appear in the B737 Engines/APU Quiz V4)

xx. What does a steady illuminated amber LOW OIL PRESSURE Alert light indicate?

The oil pressure is at or below red line

52
Q

(NOTE: This question is not in SV Study Guide but does appear in the B737 Engines/APU Quiz V4)

xx. What does blinking amber START VALVE OPEN Alert light along with 2 solid amber boxes on the upper display indicate?

A

(NOTE: This question is not in SV Study Guide but does appear in the B737 Engines/APU Quiz V4)

xx. What does blinking amber START VALVE OPEN Alert light along with 2 solid amber boxes on the upper display indicate?

There is an uncommanded opening of start valve

53
Q

(NOTE: This question is not in SV Study Guide but does appear in the B737 Engines/APU Quiz V4)

xx. In times other than engine starting, when electrical load and bleed air extraction combine to raise the EGT on the APU above acceptable levels, __________________.

A

(NOTE: This question is not in SV Study Guide but does appear in the B737 Engines/APU Quiz V4)

xx. In times other than engine starting, when electrical load and bleed air extraction combine to raise the EGT on the APU above acceptable levels, __________________.

bleed air extraction is reduced while maintaining electrical load

54
Q

(NOTE: This question is not in SV Study Guide but does appear in the B737 Engines/APU Quiz V4)

xx. What does a steady illuminated amber OIL FILTER BYPASS Alert light indicate?

A

(NOTE: This question is not in SV Study Guide but does appear in the B737 Engines/APU Quiz V4)

xx. What does a steady illuminated amber OIL FILTER BYPASS Alert light indicate?

There is an impending bypass of scavenge oil filter

55
Q

(NOTE: This question is not in SV Study Guide but does appear in the B737 Engines/APU Quiz V4)

xx. Choose the minimum engine oil quantity prior to engine start

A

(NOTE: This question is not in SV Study Guide but does appear in the B737 Engines/APU Quiz V4)

xx. Choose the minimum engine oil quantity prior to engine start

70%

56
Q

(NOTE: This question is not in SV Study Guide but does appear in the B737 Engines/APU Quiz V4)

xx. What section of the compressor on the engine produces low temperature, low pressure air?

A

(NOTE: This question is not in SV Study Guide but does appear in the B737 Engines/APU Quiz V4)

xx. What section of the compressor on the engine produces low temperature, low pressure air?

N1

57
Q

(NOTE: This question is not in SV Study Guide but does appear in the B737 Engines/APU Quiz V4)

xx. What precools engine bleed air?

A

(NOTE: This question is not in SV Study Guide but does appear in the B737 Engines/APU Quiz V4)

xx. What precools engine bleed air?

A precooler, or heat exchanger

United 737 Systems Validation Study Guide (26 July 2021) (14 decks)

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