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777 Atlas Air > Engines and APU > Flashcards

Engines and APU Flashcards

1
Q

Engine model

A

GE-90-110BIL

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2
Q

Engine rated thrust

A

110,760lbs

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3
Q

How many auto start attempts

A

3

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4
Q

Motoring period between autostart attempts

A

4 seconds motoring after starts 1 and 2

30 seconds motoring after start 3

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5
Q

Significant difference on auto start 3 compared to previous 2

A

Fuel flow is adjusted

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6
Q

Auto start will abort a start for any of the following on the ground.

(x8 answers, excluding oil temp and pressure)

A
  1. Hot start
  2. Hung start
  3. no EGT rise
  4. Compressor stall
  5. Starter shaft failure
  6. no N1 rotation
  7. Insufficient air pressure for start
  8. Start time exceeds the starter duty cycle

*N710GT does not monitor oil temperature and pressure.

(SHHE SNIS)

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7
Q

Auto start will abort a start for any of the following in flight

A
  1. Preset EGT limit exceeded (Set between start and takeoff limit)
  2. Hung start
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8
Q

How many air starts completed

A

Continuous without faults or pilot intervention

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9
Q

APU starter cutout speed

A

50%

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10
Q

What will cause the APU to automatically start

A

Both AC transfer buses lose power

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11
Q

Vibration limit and action

A

No published limits

Recommended to reduce airspeed and descend

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12
Q

Secondary engine indications automatically display when.

6x answers

A
  1. The unit initially recieves power
  2. FUEL CONTROL switch moved to CUTOFF in flight
  3. Engine fire switch is pulled in flight
  4. FUEL FLOW L,R message is displayed
  5. A secondary engine parameter is exceeded
  6. Engine N2 RPM is below idle in flight
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13
Q

EEC normal mode protections

A

Overspeed N1 and N2 and Overboost

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14
Q

EEC alternate mode protections

A

Overspeed, some overboost

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15
Q

Indications of a SOFT change of EEC to alternate mode

A

NORM and ALTN lights on the EEC mode panel illuminated

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16
Q

Indications of a HARD change to EEC alternate mode

A

NORM light extinguished and ALTN light illuminated

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17
Q

Approach idle is selection under normal conditions

2x answers

A
  1. Engine Anti Icing ON
  2. Flaps 25 or greater
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18
Q

Approach idle is selected under non normal conditions

A
  1. One Hydraulic system air-demand pump is inoperative and the flaps are out of UP.
  2. The Opposite engine bleed air valve is closed
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19
Q

How many igniters used for each autostart sequence on ground

A
  • 1 igniter for first start
  • 2 igniter for remaining 2 auto starts
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20
Q

How many igniters used for each autostart sequence in flight

A

Always 2 igniters in flight

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21
Q

What powers the igniters

A

Main AC is the normal source, standby AC provides backup

22
Q

When will the EEC attempt an auto-relight

A
  1. A rapid decrease in N2
  2. N2 RPM is below idle
23
Q

How long is fuel shut off for, if the EEC detects conditions for auto-relight

24
Q

How is flameout for an Auto relight detected.

x2 Answers

A
  1. Rapid decrease of N2
    or
  2. N2 below idle RPM
25
Q

How many igniters for inflight starts

26
Q

When is inflight start envelope information displayed

A
  1. Engine is not running (N2 spool below idle RPM)
  2. Engine has been shutdown but the fire switch has NOT been pulled
27
Q

X-BLD indication is displayed if N2 is __________ and if airspeed is ___________ recommended by envelope for an air start

A

Above

Below

28
Q

What will cause the auto start NOT to complete a second or third start.

x5 answers

A
  1. No N1 rotation
  2. Insufficient air pressure
  3. Starter shaft failure
  4. EGT exceeds start limit line
  5. Start time exceeds the starter duty cycle
29
Q

N710GT
Continuous ignition under what circumstances.

2x answers

A
  1. The flap lever is out of UP, or
  2. Engine anti ice is ON

FCOM 2 7.20.11

30
Q

Minimum oil quantity

A

No published minimum

31
Q

What will cause the EGT start limit to display

A
  1. Fuel Control switch CUTOFF
  2. N2 below idle
32
Q

Engine start selector does what when selected START

A

Opens the Start Valve

33
Q

EEC sets thrust using what engine parameter in both NORM and ALTN modes

34
Q

Engine Fuel Control switch does what selected to RUN

A

Opens the Fuel Spar Valve

35
Q

When the fuel control switch is selected to RUN what does the EEC do

A

Opens the Fuel Valve

Energizes the igniters

36
Q

Low oil quantity indications

A

“LO” on the lower DU next to quantity indicator on secondary engine indications

37
Q

What can control the engine Fuel Valve

A

The EEC

Engine Fire Switch

38
Q

What can control the Fuel Spar Valve

A

Fuel Control switch

Engine Fire Switch

39
Q

When will secondary engine indications display automatically

6x Answers

A
  1. Displays initially powered
  2. Fuel Control switch CUTOFF in flight
  3. Engine Fire switch pulled in flight
  4. FUEL FLOW ENG L/R on EICAS
  5. Secondary engine parameter exceed
  6. N2 below idle in flight
40
Q

Time critical ENG FAIL is displayed on the PFD when

A
  1. The thrust is less than commanded thrust on TAKEOFF and,
  2. Airspeed is greater than 65kts but less than 6kts below V1.
41
Q

Caution message ENG FAIL L/R displays if_______________ and remains until the engine recovers or ____________________

A
  1. The engine unexpectedly decelerates to less than idle speed.
  2. Fuel Control switch is moved to CUTOFF
42
Q

EICAS caution message ENG THRUST L/R displays if

A
  1. Actual thrust is significantly less than commanded thrust
  2. Actual thrust is not increasing to commanded thrust
  3. Airspeed is V1-6kts or greater
43
Q

When does the EEC inhibit reverser thrust isolation valve and reverser deployment

A

The aircraft is in flight with the engine running

44
Q

What happens when thrust reversers are pulled aft to the interlock position

A
  1. The auto throttle disengages
  2. The auto speed brakes deploy regardless of lever position
45
Q

When can the Reverse Thrust lever be moved aft to the interlock position

A

If the thrust Lever is idle

46
Q

APU reasons for auto shut down in attended mode

A
  1. APU fire/inlet over temperature
  2. Overspeed/loss of overspeed protection
  3. APU Controller failure
  4. Speed droop

Note EICAS messages for
1. High oil temperature
2. Low oil pressure
3. EGT high

(SPIC) (Same as SPICY)

47
Q

APU reasons for auto shutdown in unattended mode

A
  1. All attended mode reasons
  2. Generator oil filter approaching bypass
  3. No Combustion on start
  4. No acceleration on start
  5. High oil temperature
  6. Low oil temperature
  7. Intake door failure
  8. EGT high

SPICY ACID

48
Q

What determines APU attended or unattended mode

A

The attended mode operates when
1. Either engine is running or starting
2. The aircraft is in flight

49
Q

Amber EGT indications are inhibited for ____ minutes after takeoff or go around

50
Q

What will selecting the APU selector to OFF do

A
  1. Close the APU bleed valve
  2. Begin APU cooldown period (No published time)
51
Q

Will an automatic shutdown of the APU commence a cooldown period

777 Atlas Air (16 decks)

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