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M15 Ryan > M15.10 > Flashcards

M15.10 Flashcards

1
Q

What does the lubrication system distribute oil to?

A

Bearings
Gearboxes

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2
Q

What type of sump do GTE’s use?

A

Dry sump

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3
Q

Where is supply filter located on the lubrication system?

A

Downstream of supply pump

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4
Q

What is the purpose of the scavenge system?

A

To return oil from bearing and gearbox components to oil tank

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5
Q

What are the 4 subsystems that make up the oil system?

A

Resvour
Scavenge
Vent
Monitoring

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6
Q

What does the vent system do to air?

A

Vent it to the atmosphere

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7
Q

What do bearings have to release the sealing air?

A

Vent line

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8
Q

How many scavenge systems does each oil system have?

A

1 scavenge pump per line

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9
Q

What does the monitoring system monitor?

A

Oil quantity
Oil pressure
Oil temp

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10
Q

What are the sensors in the fuel monitoring system?

A

Quantity sensor
Pressure sensor
Temp sensor
Low oil pressure switch
Filter clogging switch

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11
Q

What type of indicator is the mechanical clogging indicator?

A

A pop out indicator

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12
Q

EIU

A

Engine Interface Unit

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13
Q

What does the EIU do?

A

Relieves info from sensor to perform required measurements

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14
Q

What are the 2 types of transmitters used for oil quantity?

A

Capacitance type
Reef switch type

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15
Q

How do we get a oil pressure indication?

A

Transmitter senses the pressure difference between the total oil pressure in the oil supply and vent pressure in oil tank

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16
Q

What does the de-oiler do in the vent system?

A

Separate the oil from the air before it is vented overboard

17
Q

What type of pumps are oil pumps?

A

Positive displacement pumps

18
Q

What does the reed switch do to give oil level indications?

A

Uses a magnetic float that opens and closes switches as it moves up and down

19
Q

Where does the oil temp thermocouple get its power from?

A

It generates its own power

20
Q

Why do you wait 5 mins after shutting down before opening the oil filled cap?

A

The slow the oil tank to depressurise

21
Q

Why is the engine oil replenishment recorded?

A

To keep track of engine oil consumption

22
Q

How is engine low oil pressure warning shown in cockpit?

A

A warning sign come on and a aural sound as well

23
Q

Where is the oil temp sensor found?

A

In the scavenge system

24
Q

What are the 2 types of oil temp sensors?

A

Thermocouple
Thermistor

25
Q

SOAP?

A

spectrometric Oil Analysis Program

26
Q

What does SOAP do?

A

Scientificly examine oil to see if there are particles in it that may not have been caught by the filter

27
Q

What is the smallest size of particle a scavenge oil filter is able to catch?

A

0.015mm

28
Q

What is the negative with using a scavenge oil filter system?

A

Filter not changed very often
Filter inspection takes time

29
Q

What’s the positives of a magnetic chip detector?

A

Easier
Takes less time
Can be electronically checked

30
Q

How can you tell electronically if there are particles on the magnetic chip detector?

A

Has 2 magnets on the tip the ECU monitors resistance and if there are particles the resistance will decrease

31
Q

How can you check the oil level?

A

On ECAM/EICAS
Or
Sight gauges

32
Q

On engines without anti siphon when must you check the oil leaves?

A

5-20mins after engine shut down

33
Q

Why must you wait 5mins before opening oil cap after shut down?

A

Hot oil could spray out

34
Q

Where can details for the required oil type be found?

A

On a label close to the oil tank filler vap

35
Q

When must the magnetic chip detector be inspected?

A

At fixed intervals

36
Q

What are the rules regarding magnetic chip detectors?

A

Engineer can only check one engine and must get it cross checked

37
Q

What PPE must you wear when inspecting magnetic chip detectors?

A

Gloves as may be hot

M15 Ryan (17 decks)

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