M15.13

Question 1

What are the 3 main engine controls?

Answer 1

Engine start controls
Fwd thrust controls
Reverse thrust controls

Question 2

What does the start leave do?

Answer 2

Switches fuel on and off and switches ignition on during engine start

Question 3

How is fuel supplied to the combustion chamber?

Answer 3

Via a high pressure fuel shut off valve and a low pressure fuel shut off valve

Question 4

How is the position of the fuel shut off valves shown?

Answer 4

A fuel valve close light

Question 5

How is the hp fuel shut off valve controlled?

Answer 5

Mechanically by engine start leaver

Question 6

On Airbus how are the hp and lip fuel valves controlled?

Answer 6

Via engine master switch

Question 7

How do you know if the fuel valve is open on Airbus?

Answer 7

Via:
Fuel flow indication
Increase in EGT
Fuel used indication

Question 8

What are the 2 positions of reverse thrust leaver?

Answer 8

Idle
Full thrust

Question 9

What is the purpose of the friction brake?

Answer 9

Internal friction to keep throttle in selected position

Question 10

How does the throttle move during auto throttle?

Answer 10

With the electrical servo motor

Question 11

What are the 3 warnings activated by throttle micro switches?

Answer 11

Take off warning
Cabin pressurisation
Thrust reverser activation

Question 12

What is the throttle interlock system?

Answer 12

Separates the forward thrust control system and rear thrust control system

Question 13

Where is the throttle interlock system usually located?

Answer 13

On the engine pylon

Question 14

How is the throttle interlock system controlled?

Answer 14

By a mechanical feedback system

Question 15

How many thrust control signals are sent from each control leaver?

Answer 15

2 separate signals

Question 16

How many resolvers are there for each throttle ?

Answer 16

2

Question 17

What does the resolver do?

Answer 17

A electrical component that converts angular deflection of leaver to a electrical signal

Question 18

What is the purpose of the artificial feel system?

Answer 18

Give the pilot a feel of resistance

Question 19

Do the throttles move on their own when in auto throttle in Boeing and Airbus?

Answer 19

Boeing = yes
Airbus = no

Question 20

When is the start ignition required?

Answer 20

To start the combustion process

Question 21

When would there be continuous ignition?

Answer 21

When there’s a risk of engine flame out

Question 22

What are the ignition components?

Answer 22

Ignition exciter
Igniter plug
Ignition leads

Question 23

How many ignition systems does each engine have?
And what are they?

Answer 23

2
A and B

Question 24

Why does each engine have 2 ignition systems?

Answer 24

For safety

Question 25

What is one ignition system always powered by?

Answer 25

Emergency power

Question 26

What must you never do with the ignition exciter?

Answer 26

Touch it

Question 27

Where are the igniter plugs installed?

Answer 27

In 2 positions in the combustion chamber bellow the centre line

Question 28

What does 2 blue rings signify on igniter plugs?

Answer 28

They are made of toxic beryllium oxide

Question 29

What must you never do with igniter plugs made from beryllium oxide?

Answer 29

Touch them with your bear hands

Question 30

Why must you never drop igniter plugs?

Answer 30

Because you can brake the insulator

Question 31

Why is cooling air needed on ignition leads?

Answer 31

Because copper wires resistance increases when it’s temp increases

Question 32

What keeps ignition leads contact centred?

Answer 32

A ceramic insulator

Question 33

Starting systems for GTE’s can be what?

Answer 33

Pneumatic or electric

Question 34

What does the starter motor do?

Answer 34

Gets everything turning to start the engine

Question 35

What is a use for the starter motor during maintenance?

Answer 35

To turn over the engine

Question 36

Can the pneumatic starter motor start the engine in flight?

Answer 36

Yes

Question 37

The starter motor operates the compressor through what?

Answer 37

The accessories gearbox

Question 38

The idle speed and starter cut out speed is always higher then what?

Answer 38

Self sustaining speed

Question 39

What are the 4 components that make up the pneumatic starter motor?

Answer 39

Pneumatic starter motor Starter air supply duct Starter shut off valve Cockpit controls

Question 40

How can air supply for starter motor be switched on or off?

Answer 40

With the starter shut off valve

Question 41

Where is the starter shut off valve located?

Answer 41

In the lower area of the engine so it can be easily accessed by Maintenance personnel

Question 42

How is a starter shut off valve controlled and operated?

Answer 42

Electrically controlled Pneumatically operated