POWERPLANT

Question 1

What are the primary engine parameters?

Answer 1

EPR, N1 and EGT

Question 2

What are the secondary Engine parameters?

Answer 2

N2, N3, fuel flow, oil pressure, oil temperature and Engine vibration

Question 3

What pilot action would cause automatic display of the secondary engine parameters?

Answer 3

A fuel control switch moved to CUTOFF in flight or an engine fire handle is pulled

Question 4

How is the EGT maximum continuous limit indicated?

Answer 4

An amber band

Question 5

When are EGT indications inhibited from changing to Amber?

Answer 5

For 5 min during take-off or go-around

Question 6

How is maximum take-off EGT indicated?

Answer 6

The red EGT line

Question 7

How can the red exceedance box be removed from EICAS?

Answer 7

By pressing the CANC/RECALL switch on the display select panel

Question 8

Which two engine parameters change to black (reverse colours) when abnormal?

Answer 8

Oil quantity and ENG VIB

Question 9

How is maximum EPR indicated?

Answer 9

By an amber line at the top of the EPR dial

Question 10

What are the parameters for setting thrust in the normal and alternate modes?

Answer 10

In normal mode: EPR

Alternate mode: N1

Question 11

How can maximum rated thrust be obtained?

Answer 11

In normal mode: by´moving the thrust levers to the full forward positions

Question 12

What are the two types of alternate (autothrottle) mode?

Answer 12

1. Soft

2. Hard

Question 13

How is soft mode selected?

Answer 13

Automatically. The A/T defaults to this after a failiure in normal mode

Question 14

How is hard mode selected?

Answer 14

Manually. By pushing the EEC mode switch to ALTN

Question 15

How is the A/T affected by alternate mode?

Answer 15

It remains engaged but it now commands N1 values instead of EPR

Question 16

In which modes is A/T available?

Answer 16

In Normal Mode and Alternate Modes

Question 17

When is maximum rated thrust achieved in Alternate Mode?

Answer 17

Before the full forward position of the thrust levers

Question 18

What protections are available in alternate mode?

Answer 18

N1 and N2 red line protections

Question 19

How does the EEC protect against rotor overspeed?

Answer 19

By commanding reduced fuel flow

Question 20

Why is approach idle selected with FLAPS 25?

Answer 20

To decrease acceleration time for a go-around

Question 21

During autostart, what do the fuel control switches do?

Answer 21

They open the spar valve and arm the Engine fuel valve and ignitiors.
The EEC will open the Engine fuel valve and start the ignitors when the appropriate N2 and N3 RPMs are reached

Question 22

At what N3 rpm does the starter cut out?

Answer 22

At 50% N3

Question 23

When does the EGT maximum start limit disappear?

Answer 23

Once the engine is stabilized at idle

Question 24

Which fuel vale is operated by moving the fuel control switch to RUN?

Answer 24

The spar valve in autostart.

The spar valve and engine valve in manual start

Question 25

Does autostart monitor all engine parameters?

Answer 25

No, not oil pressure and temperature

Question 26

After an aborted ground start, at what EGT will a re-attempt be performed?

Answer 26

After the EGT falls below 100 deg C

Question 27

For which events will autostart not attempt a re-start?

Answer 27

No N1 rotation

Question 28

How many times will autostart attempt a ground start?

Answer 28

Twice for a hot start, no EGT rise or compressor stall

For more serious abnormalities (no N1 rotation) it will not make a second attempt

Question 29

For which events will autostart not attempt to re-start?

Answer 29

No N1 rotaion
Low air starter pressure
Starter shaft failiure
Duty cycle timer expires
Start is aborted above starter cut out speed

Question 30

After an aborted in-flight start, at what EGT will a re-attempt be performed?

Answer 30

200 deg C or lower

Question 31

During a manual start, when are fuel and ignition introduced?

Answer 31

As soon as the fuel control switch is positioned to RUN

Question 32

Where is the crossbleed start indication displayed?

Answer 32

Next to the N3 indication

Question 33

When is a cross bleed start indication displayed next to the N3 indication?

Answer 33

If the airspeed is below that recommended for a windmilling start

Question 34

In flight, how many attempts will the autostart perform?

Answer 34

The autostart will make continous start attempts until the engine either starts or the pilot aborts the start attempt

Question 35

How many igniters are used for in flight starting?

Answer 35

Dual ignitors are always used for in flight starts

Question 36

How is flameout protection accomplished?

Answer 36

By both igniters activating

Question 37

When is the auto relight function activated?

Answer 37

Whenever an engine is at or below idle with the fuel control switch in RUN

Question 38

What are the limitaions for engine oil quantity?

Answer 38

There is no minimum oil quantity limit

Question 39

How are the fan reversers activated?

Answer 39

Hydraulically

Question 40

When can maximum reverse thrust be achieved?

Answer 40

When the interlock releases

Question 41

What is the purpose of the reverse thrust interlock?

Answer 41

A/T disengages and auto speed brake deploy.

When released, maximum reverse thrust can be achieved

Question 42

How is average vibration indicated?

Answer 42

On the secondary engine display

Question 43

What is the limitaion for engine vibration?

Answer 43

There is no limit, but high vibration level will cause automatic display of secondary engine parameters

Question 44

Which rotor vibration is mostly likely to cause tactile vibration?

Answer 44

N1

Question 45

When will the ENGINE FAIL message appear on the PFD?

Answer 45

If actual thrust is less than commanded thrust during take-off with airspeed between 65 kts and V1 -6 kts

Question 46

Which EICAS message indicates that actual thrust is significantly less than the commanded thrust?

Answer 46

ENG THRUST L/R