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KEY LIME STUDY 2019 > ORAL* E145 Powerplant > Flashcards

ORAL* E145 Powerplant Flashcards

1
Q

Engine Model

A

AE3007A1P

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2
Q

Max Thrust?

A

8169 lbs

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3
Q

N1 is?

A

Single stage Fan, 3 stage low pressure turbine

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4
Q

N2 is?

A

14 stage compressor with inlet guide vanes and a two stage high pressure turbine

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5
Q

FADECS

A

2 per engine, one in use at a time

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6
Q

Variable Geometry Vanes are

A

on stages 1-5 and the inlet guide vanes

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7
Q

What moves Compressor Guide Vanes

A

Fuel pressure from FPMU

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8
Q

Bleed from which stages?

A

9 and 14

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9
Q

What items are or accessory gear box?

A 
Fuel Pump
Hydraulic Pump
Oil Pump
Alternator
Generators
Starter
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10
Q

Fuel from FPMU goes where?

A

Nozzles in combustion chamber and the CVG’s

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11
Q

The FCOC is?

A

Fuel cooled oil cooler

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12
Q

Bypass of FCOC occurs?

A

When oil temp is more than 93.3C or pressure differential is greater than 50 psi

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13
Q

How many fuel nozzles each engine?

A

16

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14
Q

How is oil cooled?

A

Air, ACOC

and Fuel FCOC

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15
Q

Oil capacity

A

12 quarts

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16
Q

Where is oil level shown?

A

T/O page on MFD

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17
Q

Oil Caution level?

A

5 quarts and below

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18
Q

The oil pump has how many pressure and scavenge units?

A

6….1 pressure, 5 scavenge

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19
Q

Oil is scavenged from how many engine sumps?

A

4….fan sump, front sump, center sump, aft sump. It’s also sumped from the AGB

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20
Q

What does the PMA Alternator power?

A

ignition and FADEC

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21
Q

What powers FADEC before alternator?

A

DC system

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22
Q

Do igniters have any other power source besides PMA?

A

No

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23
Q

PMA provides igniters power at?

A

10% N2 and above

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24
Q

PMA powers FADEC at what speed?

A

50% N2 and above

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25
Q

In the event of an electrical emergency, what does the PMA also power?

A

The thrust rating buttons

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26
Q

How many igniters on each engine?

A

2

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27
Q

Each igniter controlled by a single

A

FADEC

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28
Q

IGNITION ON function

A

Both igniters fired by it’s FADEC

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29
Q

IGNITION AUTO function

A

Only one FADEC controls ignition. Shuts down ignition after start, and only one exciter used. Auto relight will activate ignition system

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30
Q

How do you dry motor?

A

Ignition Selector Knob in OFF, and START

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31
Q

What can supply air for start

A

APU, Huffer Cart, Or Cross Bleed from Running Engine

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32
Q

Start Control Valve….how can it be controlled if it fails?

A

Manual Override at the engine

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33
Q

What does E1 ATS SOV OPN Caution message mean?

A

Start Control Valve didn’t close…it should close at 53% N2 + 10 seconds

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34
Q

When is Starter cutoff? Start relay shut off by FADEC

A

56.4 % N2

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35
Q

FCOC temp/pressure sensor may not display proper Oil pressure for how long after start?

A

It MAY display approx 90 psi for 2 minutes after which it will jump to actual pressure

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36
Q

When is OIL LOW PRESS displayed?

A

Below 34 psi with engine running or if pressure switch has failed closed without engine running

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37
Q

What does FUEL LOW TEMP mean?

A

Fuel temp at the engine is less than 5C

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38
Q

What engine protections does FADEC provide?

A

Overspeed, always, and temp limits after start

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39
Q

Which FADEC is in control

A

It alternates with each start

40
Q

How do you know which FADEC channel is in control

A

It’s on the EICAS

41
Q

Can you manually change FADEC channels?

A

Yes…ALTN on FADEC selector knob

42
Q

How does FADEC do N1 Target calculations?

A

Pressure altitude and Mach from the ADCs, temp references, Anti Ice condition and takeoff mode

43
Q

On EICAS…what does N1 Target look like?

A

Blue T on N1 gauge

44
Q

On Eicas what does N1 request look like

A

Green bug on N1 gauge

45
Q

Does flight idle change with Anti Ice on?

A

Yes…adjusted to provide enough bleed

46
Q

In flight with anti ice on when is flight idle not rescheduled?

A

inhibited below 15k with gear down and locked

47
Q

How fast must engine be able to accelerate to 100% from idle in flight?

A

8 seconds or less at or below 9500 feet

48
Q

in flight, FADEC will try to relight until?

A

engine spools down to below 53% N2

49
Q

IN flight, which ignition systems are used during restarts?

A

Both

50
Q

When will FADEC switch channels automatically?

A

If one fails or cannot control the engine

51
Q

What does RESET on FADEC knob do?

A

Clears previous faults

52
Q

If both FADEC’s fail will engine run?

A

No

53
Q

What are the thrust modes of A1P Engines?

A

Alt T/O 1, T/O, Max Continuous (CON) CLB, CRZ

54
Q

In flex…(Alt T/O) Engine fails…what does good engine schedule

A

T/O-1

55
Q

How do you select T/O-1 in flight

A

Press T/O thrust rating button at or above field elevation +1700 feet after takeoff

56
Q

When is T/O selected auto in flight?

A

Gear down and locked below 15k

57
Q

If T/O Mode is selected and engine fails what thrust on remaining engine is programmed? Or when thrust leveret pushed past Thrust set detent

A

T/O RSV

58
Q

When is ATTCS armed?

A

When both engines are ATTCS capable (ALT T/O-1 or T/O) and thrust levers are advanced beyond 45 degrees

59
Q

When is ATTCS triggered

A

Generally…When the other engine fails…or it detects a condition be it thrust lever reduction on opposite side and so on

60
Q

When is ATTCS disarmed?

A

When ATTCS is triggered, or thrust levers reduced or there’s no T/O mode selected

61
Q

What has to be entered to calculate N1 Target?

A

Temp, T/O mode, and whether Anti ice is on

62
Q

When entering temp on T/O page of MFD…how close does it have to be to synthesized temp?

A

10 degrees C or you get an error

63
Q

During ground start when does FADEC activate ignition?

A

14 % N2

64
Q

During ground start when is fuel added

A

28.5 % N2

65
Q

If Thrust is out of idle and ignition switch turn to off will engine shut down?

A

No.

66
Q

After start abort…how many seconds must you dry motor?

A

30 seconds

67
Q

Amber REV on EICAS…what does it mean?

A

Reverser in transit

68
Q

Green REV on EICAS?

A

Reverser open

69
Q

How many locks on reversers?

A

3 each…two electric/hydraulic, and one electric/electric

70
Q

Normal ops, reversers stowed..which lock is active

A

Just one..the primary. If it fails, secondary activates, followed by tertiary

71
Q

What conditions for REVERSERS?

A

WOW, faster than 25 knots if main only, or WOW all wheels

72
Q

While REVERSERS unlocked or in motion, what if you move thrust forward?

A

IDLE Thrust commanded by FADEC

73
Q

Can you reverse with one engine ions?

A

Yes, if inop is in idle

74
Q

MAX N1?

A

100%

75
Q

MAX N2?

A

102.4%

76
Q

Max Start ITT?

A

800 C

77
Q

Max Takeoff ITT?

A

948 C for 5 minutes

78
Q

Max continuous ITT?

A

901 C

79
Q

Minimum Oil Pressure?

A

34 psi below 88% 50psi above

80
Q

Max Oil Pressure?

A

95 psi. Higher okay during cold starts/cold oil. Idle until warm and psi less than 95

81
Q

Minimum Oil temp for start?

A

-40 C

82
Q

Max fuel temp?

A

52 C

83
Q

Max n1 vibe?

A

1.1…can be amber during TOGA or 10 seconds other flight phases

84
Q

Starter Limits?

A 
1-4...1 minute on, 1 minute off
After 4...1 minute on, 5 off
Dry motor 5 on 5 off
In flight...5 minutes on, no cool down
11,15,55,5
85
Q

Idle warm up?

A

Cold - 4 minutes, Warm, 2 minutes

86
Q

When is engine cold

A

Shut down for 90 minutes

87
Q

When can 83% thrust be exceeded after start

A

Oil temp > 40

Or pressure less than 83 psi

88
Q

After landing shutdown limit

A

1 minute at idle

89
Q

Starting sequence

A

RUN for at least 2 seconds before START

90
Q

When does ignition shut off in start

A

57% N2 ? (EICAS MSG goes away at 57%)

91
Q

How long between APU start and engine shutdown

A

1 minute Do not shut down engine while APU is being started

92
Q

What engine do you need for taxi?

A

2….Steering is on DC Bus 2

93
Q

If you have engine shutdown and need GPU, what is limit

A

N2 at 0%….You should connect prior to shutdown if APU is unavailable

94
Q

Air temp below 10C…Starting engine which position on switch?

A

ON…for both igniters

95
Q

Cross Bleed start…What RPM on running engine?

A

> 80%

96
Q

Min oil level for takeoff (recommended)

A

8 its

KEY LIME STUDY 2019 (22 decks)

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