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Atlas Air B767 > Engines + APU > Flashcards

Engines + APU Flashcards

1
Q

EEC PWR Source?

A

Self-powered when engine running via PMA

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2
Q

What happens if EEC fails?

A

The engine will shut down.

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3
Q

EEC NORM provides what protections?

A
  • Overspeed
  • Overboost
  • Red Line Protection
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4
Q

How is EEC max thrust limit displayed?

A

Amber line on inner arc on N1 display

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5
Q

EEC SOFT MODE?

A

When EEC auto switches to ALTN mode but switch is left in NORM.

At fixed thrust lever position, thrust does not change.

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6
Q

EEC HARD MODE?

A

Both the switch position and engine mode are ALTN.

Thrust may change to set commanded N1

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7
Q

What protections are lost in EEC ALTN MODE?

A
  • OVERBOOST not provided

Max-rated thrust is reached at a thrust lever position less than full forward. Overboost can occur.

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8
Q

What mode(s) does EEC provide red line overspeed protection in?

A

Both NORM and ALTN

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9
Q

APPROACH IDLE commanded by EEC for what 3 conditions?

A
  • FLAPS 25 or 30
  • CONT IGNITION
  • ENG A/I ON
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10
Q

EEC N1 pointer and color?

A

Indicates current reference N1 limit (MAX AUTOTHROTTLE THRUST). Can be read digitally above the corresponding N1 box.

<em>*Changes to magenta when FMC/VNAV controlled</em>

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11
Q

ENG EGT Indications are inhibited when?

A

During takeoff or go-around, inhibited from changing to amber for 5 MINS*.

*10 MINS for single engine ops.

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12
Q

UPPER or LOWER CRT failure?

A

Both AUTO display on the operable unit if EICAS switch in AUTO.

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13
Q

When is inflight start envelope displayed?

A

IN FLIGHT CONDITIONS WITH:

  • ENG not running
  • FIRE Switch not pulled
  • FUEL CONTROL CUTOFF
  • ENG N2 below idle
  • BOTH EICAS displays selected
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14
Q

X-BLD displayed means? Location?

A

Inflight envelope is displayed but airspeed and altitude aren’t sufficient for windmill start.

ENG/APU bleed start is required.

Displayed above N2 on secondary EICAS

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15
Q

The red indicator on the EGT gauge? When is it visible?

A

EGT Start Limit. Displayed from shutdown through next engine start.

*Engine has started when it disappears

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16
Q

L/R ENG STARTER EICAS MSG?

A

START VLV failed to OPEN for start

17
Q

L/R STARTER CUTOUT EICAS MSG?

A

START VLV failed to CLOSE after start

18
Q

When does STARTER CUTOUT normally occur?

What else occurs (regarding APU and electrical SYS)?

A

50% N2

APU BLD will CLOSE and SHED items return

19
Q

N2 re-engagement ranges?

A
  • 0 - 20% = Permissible
  • 20% - 30% = Only for fire
  • 30%+ = May result in starter damage
20
Q

ENG AUTO-RELIGHT?

A

EEC will energize both ignitors if N2 drops below idle regardless of air/ground.

21
Q

What occurs as reverse TL are pulled aft to interlock position?

A
  • Autothrottles disengage
  • Speedbrakes deploy
22
Q

REV EICAS Indication colors?

A
  • AMBER = REV in transit
  • GREEN = REV is fully deployed
23
Q

What prevents uncommanded REV actuation?

A
  • Auto-stow feature applies pneumatic pressure to stow the reverser.

or

  • Electromechanical lock
24
Q

REV ISLN Light? When inhibited?

A

System Fault

Inhibited in flight as TR are pneumatically and mechanically locked.

25
Q

BATT(S) required for APU start and items powered?

A

APU BATT:

  • APU STARTER MOTOR
  • APU CONTROLLER
  • INLET DOOR

MAIN BATT:

  • FIRE DETECTION
  • APU FUEL VLV
  • DC FUEL PUMP
26
Q

APU FUEL Sources?

A
  • L FWD AC
  • L DC Pump
27
Q

APU START Light Sequence?

A

FAULT FLASH

  • APU FUEL VLV OPENING

RUN FLASH TWICE

  • INTERNAL TEST

RUN STEADY

  • APU RUNNING
28
Q

APU FAULT Light?

A

Fault or Fire has occurred and APU shuts down immediately. Normal cool down is eliminated.

29
Q

APU in flight provides electrical power to what altitude?

A

FL431

30
Q

How long is APU Shutdown Sequence?

A

PNEUMATIC ACTIVE:

  • APU FUEL VLV closes and 1-2 min delay is started

NOT ACTIVE:

  • Shuts down without delay
31
Q

Are autothrottles lost when EEC switches to ALTN mode?

A

Initially, YES but restored when both EEC in ALTN

32
Q

START SWITCH to GND does what?

* 1st ENG start

A
  • Arms IGN
  • OPENS ENG STARTER VLV
  • CLOSES ENG BLD VLV
  • OPENS APU BLD VLV
  • L ELEC DEMAND PUMP SHED
  • UTILITY BUSES Shed (1st ENG start)
33
Q

Target DUCT PRESS for ENG START?

When do we introduce fuel during ENG START?

Light OFF time?

A

21PSI

Max Motoring or 30sec

25sec

34
Q

ENG FCS to RUN does what 3 things?

A
  • Energizes IGN
  • OPENS ENG FUEL VLV
  • OPENS ENG SPAR VLV
35
Q

SEI Displays?

A
  • Both CRT FAIL
  • Both EICAS COMPUTERS FAIL
  • AC PWR LOSS

Atlas Air B767 (16 decks)

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