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DAL 737 S-LOD > Engines, APU > Flashcards

Engines, APU Flashcards

1
Q

Explain what is indicated by a REV indication above the N1 indicator

A

REV (amber) - Thrust reverser moved from stowed position

REV (green) - Thrust reverser is deployed

VOL 2 / 7.1.1.31

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2
Q

Describe the Engine Abnormal Start Procedure (ground starts only)

A

During ground starts, the EEC monitors engine parameters to detect impending hot starts, engine stalls, EGT start limit exceedances, and wet starts. These protection features do not function during inflight starts.

  • If an impending hot start is detected by a rapid rise in EGT or EGT approaching the start limit, or a compressor stall occurs, the white box surrounding the EGT digital readout flashes white. The EEC software automatically turns off the ignition and shuts off the fuel to the engine for an impending hot start or stall.
  • If the EGT exceeds the starting limit, the EGT display, both box and dial, turn red. The EEC automatically turns off the ignition and shuts off the fuel to the engine.
  • A wet start occurs if the EGT does not rise after the start lever is moved to IDLE. If a wet start is detected, the EEC turns off the ignition and shuts off the fuel to the engine 15 seconds after the start lever is moved to IDLE.

VOL 2 / 7.3.7.1

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3
Q

Explain what is indicated by an amber REVERSER light on the aft overhead panel

A

the REVERSER light, located on the aft overhead panel, illuminates when the thrust reverser is commanded to stow and extinguishes 10 seconds later when the isolation valve closes. Any time the REVERSER light illuminates for more than approximately 12 seconds, a malfunction has occurred and the MASTER CAUTION and ENG system annunciator lights illuminate

VOL 2 / 7.3.8

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4
Q

Explain the meaning of the amber APU LOW OIL PRESSURE light

A

Oil pressure is low causing an automatic shutdown (after start cycle is complete)

VOL 2 / 7.2.6

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5
Q

Explain the meaning of the blue APU MAINT (Maintenance) light

A

APU Maintenance problems exist

Note: Call maintenance

VOL 2 / 7.2.6

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6
Q

Explain the meaning of the amber APU FAULT light

A

A malfunction exists causing the APU to initiate an automatic shutdown

VOL 2 / 7.2.6

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7
Q

Explain the meaning of the amber APU OVERSPEED light

A
  • APU RPM limit has been exceeded resulting in an automatic shutdown
  • Overspeed shutdown protection feature has failed a self-test during normal APU shutdown

VOL 2 / 7.2.6

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8
Q

Recall the function of the Electronic Engine Control (EEC) Switches

A

ON (in view, white): indicates normal control mode is selected

ALTN (illuminated amber): EEC has automatically switched to alternate mode control mode or it has been selected manually

Note: Both ON ALTN may be in view if EEC has automatically switched to soft alternate mode. EGT limits must be observed in all control modes

VOL 2 / 7.2.3

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9
Q

Explain the meaning and location of an amber ENG FAIL alert

A
  • Displayed on the EGT indicator
  • Engine operating below sustainable idle (less than 50% N2) AND engine start lever in IDLE position

VOL 2 / 7.1.1.6

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10
Q

Explain the meaning of a framed red box around the N1, N2 or EGT indicators

A

On ground, after both engines shutdown, red box indicates an exceedance has occurred.

VOL 2 / 7.1.1.2 & 7.1.2.1 & 7.1.1.5

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11
Q

Describe when the engine start lever should be placed to IDLE during a NORMAL engine start

A

Position engine start lever to IDLE detent when N2 RPM reaches maximum motoring and N1 rotation is observed

Note: Maximum motoring occurs when N2 acceleration is less than 1% in approximately 5 seconds

Whaaaat? Not 25% N2?

VOL 1 / 3.4.8

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12
Q

Recall when the ENGINE START switch automatically moves from GRD to OFF during an engine start

A

Automatically at 56% N2 RPM; if not, position start switch to OFF

VOL 1 / 3.4.8

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13
Q

Recall the conditions that will cause the APU to auto shutdown

A

Memory Aid:

FLOF

  • F: Fire
  • L: Low oil pressure
  • O: Overspeed
  • F: Fault

VOL 2 / 7.2.6

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14
Q

Recall when the APU is ready to accept a bleed air or electrical load

A
  • The Blue APU GEN OFF BUS light illuminates when the APU is ready to accept a bleed air or electrical load
  • Electrical power may be used immediately
  • A 2 minute stabilization is recommended to extend the service life of the APU before using bleed air. Operate the APU for two full minutes after illumination of the APU GEN OFF BUS light before using it as a bleed air source

VOL 2 / 7.4.2.4

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15
Q

Describe the function of the N1 SET Knobs

A

N1 SET Outer knob:

AUTO:
- both reference N1 bugs set by FMC, based on N1 limit page and takeoff reference page
- displays reference N1 bugs at active N1 limit for A/T

BOTH:
- both reference N1 bugs and readouts manually set by turning the SET inner knob
- has no effect on A/T operation

1 or 2:
- resepective N1 reference bug and readout manually set by turning N1 SET inner knob
- has no effect on A/T operation

N1 SET Inner Knob (spring loaded to center) Rotate:
- positions reference N1 bug(s) and readouts when N1 SET outer knob is set to BOTH, 1 or 2

Note: whatever the f that means

VOL 2 / 7.1.1.2

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16
Q

An illuminated EEC ALTN light indicates that EEC:

A

has automatically or manually switched to the alternate control mode

ESV-SA: Engines, APU

17
Q

An illuminated APU LOW OIL PRESSURE light indicates that…

A

the APU oil pressure is low causing an automatic shutdown

ESV-SA: Engines, APU

18
Q

During engine start, when should the engine start lever be moved to the idle position?

A

At maximum motoring N2 (with N1 rotation)

ESV-SA: Engines, APU

19
Q

If the APU OVERSPEED light illuminates, what happens to the APU?

A

Auto shutdown

20
Q

What is indicates by an amber REVERSER light on the overhead panel?

A

The thrust reverser is commanded to stow

ESV-SA: Engines, APU

21
Q

During ground starts, the EEC monitors engine parameters to detect impending:

Select all that apply

A
  • EGT start limit exceedances
  • hot starts
  • wet starts

ESV-SA: Engines, APU

22
Q

Which statement is true concerning the function of the outer N1 SET knobs?

Select all that apply

A

AUTO - both reference N1 bugs set by FMC

BOTH - both reference N1 bugs and readouts manually set

1 or 2 - respective N1 reference bug and readout manually set

ESV-SA: Engines, APU

23
Q

What is the meaning of the ENG FAIL alert on the upper display unit?

A

The engine operating below sustainable idle (less than 50% N2)
with start lever in IDLE

ESV-SA: Engines, APU

24
Q

The ENGINE START switch should automatically move to OFF during an engine start at ____%N2

A

56% N2

ESV-SA: Engines, APU

25
Q

The APU MAINT light indicates a APU maintenance problem exists

A

TRUE

ESV-SA: Engines, APU

26
Q

A red box found on the N1, N2 or EGT indicator after engine shutdown would indicate which of the following?

A

An exceedance has occurred

ESV-SA: Engines, APU

27
Q

If a reverser if moved from the stowed position, how is it indicated?

A

Amber REV above the N1 indicator on the upper display unit

  • it’s NOT white
  • it’s NOT red
  • it’s NOT above the EGT indicator

ESV-SA: Engines, APU

28
Q

An illuminated APU LOW OIL PRESSURE light indicates that…

A

the APU oil pressure is low causing and automatic shutdown

ESV-SA: Engines, APU

29
Q

If an APU FAULT light illuminating, which of the following statements are correct?

A
  • An automatic shutdown will occur
  • A malfunction exists

ESV-SA: Engines, APU

30
Q

If an APU OVERSPEED light illuminating, which of the following statements are correct?

A
  • The overspeed shutdown protection feature has failed a self-test during normal APU shutdown
  • The APU RPM limit has been exceeded resulting in automatic shutdown

ESV-SA: Engines, APU

31
Q

To use the APU as a bleed source, what is the recommended APU warm-up time after start?

A

2 minutes

NOT 120 seconds - on the Check your knowledge CBTs, it said to wait 1 minute for APU warm up before using as a bleed source - annoying.

ESV-SA: Engines, APU

32
Q

Per the APU Check Your Knowledge CBT - What is the recommended APU warm up time after start prior to using the APU as a bleed source?

A

It should be 2 minutes but it says “one minute” is correct

NOT 120 seconds - on the Check your knowledge CBTs, it said to wait 1 minute for APU warm up before using as a bleed source - annoying.

33
Q

A red box found on the N1 indicator after engine shutdown would indicate which of the following?

A

N1 exceedance has occurred

Check your knowledge CBTs

DAL 737 S-LOD (15 decks)

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