Engines

Question 1

What are the engines?

Answer 1

GE CF6-80C2

Question 2

In AUTO when does the standby engine indicator automatically display?

Answer 2

AC power is lostEICAS failed

Question 3

EEC minimum IDLE mode

Answer 3

Lower thrustMost phases of flightGround Operations

Question 4

Approach Idle

Answer 4

Higher ThrustAutomatically selectsAnti-ice onFlaps at LDG Flap until 5 sec after touchdown

Question 5

EEC NORMAL MODE

Answer 5

Compares commanded N1 to actual N1 and adjusts fuel flow to change engine speed until actual N1 is the same as commanded N1.Over speed, Over temp, Over boost protection when thrust levers fully forward

Question 6

EEC ALTERNATE MODE

Answer 6

SOFT- auto changes if normal inputs not available remains at last setting.

Question 7

What happens when the engine cont switch is moved to cutoff

Answer 7

Spar & Eng valves close

Question 8

What does the N2 magenta bug indicate-

Answer 8

Min N2 to put fuel in (Fuel on bug)

Question 9

When can an inflight windmill start be used?

Answer 9

When there is no x-bleed display above the N2 indicator

Question 10

What will display if a X BLD start should be initiated in flight?

Answer 10

X BLD ABV N2 and a fuel on bugDisplayed when airspeed is lower than that required for a windmill start.

Question 11

What does the Thrust mode selector use?

Answer 11

ConfigurationEngine OperationConditions

Question 12

What rotor drives the engine accessory gear box?

Answer 12

N2 rotor

Question 13

When are the secondary Engine indications automatically display?

Answer 13

Initially receiving electrical powerA secondary engine parameter is exceeded

Question 14

What gauges have a caution range and what happens?

Answer 14

Oil temp & Oil pressHave caution ranges displayed by Amber bands, If reach the range the digital readout, readout boxes and pointer all change colour to Amber.

Question 15

What gauges have operating Limits?

Answer 15

N1, EGT, N2, Oil press & Oil temp have operating limits indicated by red lines, If one of these indications reaches the red line the digital readout, box and pointer all change colour to RED.

Question 16

What does EGT have?

Answer 16

Maximum continuous, indicated by an Amber line if reaches this the box, dial & pointer all turn AMBER.Inhibited during takeoff and go around for 5 minutes.Also has Max takeoff limit indicated by a red line. All turns red if reached

Question 17

What does N1 limit do?

Answer 17

Indicated by an Amber line on the dial but does not change colour when max N1 is reached.

Question 18

What is the Derate for Takeoff 1 & 2?

Answer 18

Takeoff 1 (300)- 95%. (300ER,F)- 90%Takeoff 2 (300)-85%. (300ER,F)- 80%

Question 19

When will Derates thrust remain until?

Answer 19

ABV 10,000ft Derates thrust gradually changes to reach full CLB thrust by:300-12,000ft the 1 or 2 annunciation disappears from the display by 12,500ft300ER,F- 30,000ft. The 1 annunciation disappears by 30,500ft The 2 annunciation remains until either flaps are extended or GA

Question 20

What are the engines covered for by the EEC in normal mode?

Answer 20

N1, N2 protection but no EGT protection.

Question 21

EEC Soft mode

Answer 21

Auto switches to this mode when switches in NORM. Thrust will be fixed and will not change.

Question 22

Hard Alternate mode

Answer 22

ALTN is manually selected on the EEC mode switch. Reference and target N1 and maximum commanded N1 values are displayed on the N1 indication.

Question 23

What protection is provided in the ALTN modes

Answer 23

Thrust protection not provided and maximum rated thrust is reached at a thrust lever position less than full forward. As a result thrust overboost can occur at full forward thrust lever positions.N1,N2 redline protection is still available in the ALTN control mode.

Question 24

What are the two idle speeds and when are they selected

Answer 24

Minimum Idle: lower thrust setting used for for ground ops and all stages of flight except approach & landing.Approach Idle: selected whenever the higher idle setting is required for proper system operation.EEC AUTOMATICALLY SELECTS IDLE SPEEDS

Question 25

What is displayed on the EGT during start

Answer 25

Maximum start line limit, displayed until engine is stable

Question 26

Starter duty cycle

Answer 26

Five minutes on, followed by one- half minute off per minute on.

Question 27

When does the in flight start envelope display on the primary display and what does it indicate?

Answer 27

ENG is not running in flightRespective Fire SW not pulledBoth EICAS prim & sec are selectedDisplays closest starting FL and two descending FL's at 2000ft intervals.

Question 28

Auto relight?

Answer 28

In air or on ground, automatic relight feature is enabled if N2 drops below idle SPD.EEC energizes both ignition systems.

Question 29

When do the Engine and Spar valves open?

Answer 29

When the fuel CONT switch is in the RUN position and the ENG fire SW is in.

Question 30

Where is fuel flow measured from?

Answer 30

After passing through the engine fuel valve.

Question 31

Where is the oil temp measured from?

Answer 31

After leaving the scavenge pump, prior to entering the second filter.

Question 32

Is there a minimum oil quantity limit?

Answer 32

There's is no min oil quantity limit, (no amber or red line)

Question 33

What happens when the reverses are pulled aft to the interlock position?

Answer 33

A/T disengagesAuto speed brakes deploy

Question 34

Is oil quantity displayed in litres or quarts?

Answer 34

Quarts

Question 35

When should the engine start selector move from GND to AUTO during an engine start?

Answer 35

50% N2

Question 36

With the ENG start selectors in AUTO when will the selected igniters continuously operate?

Answer 36

With slats extended or ENG anti ice on

Question 37

Is there a time limit to continuous ignition or flight ignition?

Answer 37

No time limit

Question 38

What is the purpose of selecting FLT on the ENG start selectors following a loss of dual engine failure?

Answer 38

FADEC- Auto relight which will operate both igniters when N2 drops below idle speed.

Question 39

When is the red EGT start limit line of 750degrees displayed when on the ground?

Answer 39

Fuel control SW is in cut off position, remains displayed when fuel CONT SW is moved to RUN until the engine is stabilised at idle (FADEC- 10sec after N2 reaches 60%) (NON-FADEC- 5 sec after N2 reaches 60%)

Question 40

What happens when the Fuel CONT SW is positioned to RUN?

Answer 40

Opens ENG & SPAR valvesActivates selected igniters

Question 41

Can autothrottle sill remain engaged in EEC hard and soft modes?

Answer 41

Yes

Question 42

What does pulling up the reversers do?

Answer 42

Disengages AutothrottleDeploys speed brakes if in down position