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T-6: Systems 1 > SYS105 - Propulsion Review > Flashcards

SYS105 - Propulsion Review Flashcards

1
Q

What are the three types of abnormal starts?

A
  1. Hot 2. Hung 3. No Start
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2
Q

What are the possible indications for a Hot Start?

A

High/Rapidly rising ITT Lower N1 Lower Np

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3
Q

What are the possible causes for a Hot Start?

A

PMU Fail FMU Fail Incorrect air/fuel mixture Low Battery

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4
Q

Around what % N1 would you expect to see Hot Start indications?

A

37% N1

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5
Q

What are the possible indications for a Hung Start?

A

Slow Rising ITT Lower N1 Lower Np

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6
Q

Why would a low battery possibly cause a Hot Start?

A

The battery doesn’t provide enough energy to the starter to provide enough cool airflow to the engine, causing a hot start.

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7
Q

Around what % N1 would you expect to see Hung Start indications?

A

27% N1

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8
Q

What are the possible causes for a Hung Start?

A

PMU Fail FMU Fail Incorrect air/fuel mixture Low Battery Starter Failure Ignition Systems Failure

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9
Q

What are the indications for a No Start?

A

No ITT indication Lower N1 No Np No Torque

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10
Q

What are the possible causes for a No Start?

A

PMU Fail FMU Fail Incorrect Air/Fuel Mixture Starter Failure Ignition System Failure

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11
Q

What is the first thing you should check if you suspect an engine failure?

A

N1

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12
Q

What are the possible indications of an engine failure in flight?

A

Loss of power and airspeed Rapid decay of N1, torque, and ITT MASTER WARN lights and tone Prop moves toward feather Lower than normal oil pressure Loss of engine noise

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13
Q

What annunciators might accompany an engine failure?

A

GEN FUEL PX OIL PX OBOGS FAIL PMU FAIL CKPT ALT

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14
Q

What are the possible causes for an engine failure?

A

Fuel starvation Mechanical Failure Compressor Stall

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15
Q

What are the possible indications of a PMU failure?

A

Power step change PMU FAIL and PMU Status annunciators MASTER WARN light and tone

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16
Q

What are the possible causes of a PMU Failure?

A

System Malfunction System Failure

17
Q

What are the possible indications for an Uncommanded Power Change/Loss of Power?

A

Reduction in power/thrust Lower than expected fuel flow Uncommanded decrease in N1 High RITT on AEDD

18
Q

If you have an Uncommanded Power Change/Loss of Power with oil/fuel/engine system contaminiation, what would you expect to see in addition to the normal indications?

A

Power Surges Uncontrollable high power

19
Q

What are the possible causes of Uncommanded Power Change/Loss of Power?

A

Engine rollback due to PMU Oil/engine/fuel system contamination

20
Q

What are the possible indications of an Uncommanded Prop Feather?

A

Rapid loss of power High Torque Lower Np Engine Vibration Engine Noise

21
Q

What annunciators might appear if you have an uncommanded prop feather?

A

PMU FAIL and PMU STATUS

22
Q

What are the possible causes of an uncommanded prop feather?

A

Feather dump solenoid malfunction Loss of oil pressure to prop pitch control mechanism

23
Q

What are the possible indications of a prop sleeve touchdown?

A

Torque and NP fluctuations Decreasing thrust Engine vibrations Possible CHIP warning

24
Q

What are the possible causes of a prop sleeve touchdown?

A

Loss of oil pressure to prop pitch control mechanism from momentary contact between oil transfer sleeve and prop shaft

25
Q

What is the boldface procedure that applies to a Prop Sleeve Touchdown?

A

Uncommanded Power Change/Loss of Power/Prop Feather Bold Face

26
Q

What is the FEVER check?

A

Fluctuating oil px, temp, hydraulic px Excessive ITT Visual Indications (smoke/flames) Erratic Engine Operations Roughness or Vibrations

27
Q

What are the possible indicators of an Engine Fire in Flight

A

FIRE annunciator MASTER WARN light and tone

28
Q

How many indications from the FEVER check must be confirmed before you confirm a fire in flight?

A

Only 1

29
Q

What are the possible causes for an engine fire in flight

A

Fuel or oil leaks Fire getting outside the engine

T-6: Systems 1 (10 decks)

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