Engines day 1 Flashcards

1
Q

OEi accumulated usage limit is how long?

A

10 minutes

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2
Q

What maintenance is a 1st Line Maintenance?

A

Scheduled and preventative, corrective/unscheduled (replacements of LRU)

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3
Q

What maintenance is a 3rd Line Maintenance?

A

Deep corrective maintenance which includes module repairs.

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4
Q

Who can do 3rd Line Maintenance?

A

Operator or Maintenance Facility holding specific license.

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5
Q

Where are the life limits for the engine found?

A

Ch.5 of the EMM

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6
Q

What are Life Limits expressed in?

A

Operating Cycles

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7
Q

What happens when a component reaches its Life Limit?

A

It must be scrapped.

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8
Q

Where is the maintenance information found?

A

Ch.71 of the EMM

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9
Q

What items are TBO?

A

Engine, Modules & Accessories

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10
Q

What items are Life Limits?

A

Cycles of Compressors and Turbines

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11
Q

Which phase of the engine has the highest temperture?

A

Combustion phase

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12
Q

How many Modules does the Arrial 2E have?

A

5

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13
Q

Centrifugal compression is made in which module?

A

Module 3

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14
Q

Which Line can a module be replaced?

A

2nd Line Maintenance

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15
Q

Which module has calibrated orifices to obtain a stable flame?

A

Module 3

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16
Q

What is the purpose of the calibrated orifices in the combustion chamber?

A

to obtain a stable flame, dilute and cool gases, and correce distribution of temperture on the gas turbine

17
Q

Which components are the rotating compnemts of the centrifugal compresor?

A

The wheel and the bearings

18
Q

What type is the combustion chamber ?

A

annular type combustion chamber

19
Q

How is the combustion chamber split?

A

In to two
- Primary air for mixing with fuel
- Secondary for obtaining a stable flame and cooling

20
Q

Where is the overall engine identification plate?

A

pitted on the L/H side of module M01 protection tube.

21
Q

What are the compressor wheels made of?

22
Q

What is the speed of the Gas Generator (N1 shaft)?

23
Q

What is the speed of the engine output shaft (N2)?

24
Q

What is the temperture of the combustion chamber?

25
What is the temperature at the Gas Turbine?
1125 C
26
Where are the engine mount vibration isolators installed?
at the fwd engine mount
27
What is monitoring the condition of the IBFs?
AMC1&2
28
What is the IBF filter frame made from?
Carbon Fibre.
29
How many Px sensors in the IBF?
2, one before and one after the filter
30
Where is the N1 speed measured?
on the alternator drive gear in the ENGINE ACC G.BOX
31
Module 5 is what?
reduction gearbox
32
How many stages of reduction is Module 5?
3 stage