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Flashcards in ENGINE & APU Deck (45)
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1

WHICH ENGINE POWER THE 787-8?

GEnx 1B67 WITH 67000 LBS TRUST

2

WHICH ENGINE POWER THE B787-9?

GEnx 1B70/75 69800 LBS OF THRUST EACH

3

WHAT IS CONTROLLING THE ENGINE?

THE EEC CONTROLS THE ENGINE

4

HOW MANY ENGINE INDICATION WE HAVE ON B787?

2, PRIMARY AND SECONDARY

5

PRIMARY INDICATIONS?

N1 AND EGT

6

SECONDARY INDICATIONS?

N2,FF,OIL QTY,OIL PRESS,OIL TEMP, VIB

7

WHEN SECONDARY INDICATIONS AUTOMATICALLY SHOWN?

.INITIAL POWER UP
.START SWITCH IN START
.FUEL CONTROL IN CUTOFF IN FLIGHT
.EXCEEDANCE
.N2 BELOW IDLE
FF ADVISORY SHOWN
.FIRE SWITCH PULLED

8

WHAT HAPPEN IN CASE OF EXCEEDANCE OF A PARAMETER OPERATING LIMIT?

THE ROUND DIAL AND OR BOX BECOMES RED , WHEN THE PARAMETER COMES BACK TO NORMAL THE RED COLOR CAN BE RECALLED

9

HOW MANY MODES HAS AN EEC?

2 NORMAL AND ALTN

10

HOW MANY ALTN MODE HAS AN EEC?

TWO SOFT AND HARD

11

WHICH PARAMETER IS USING THE EEC TO MANAGE THE ENGINE?

N1

12

HOW THE ALTERNATE MODE ACTIVATE?

IF NORMAL SIGNAL ARE NOT AVAILABLE THE SYSTEM OF THE EEC SWITH AUTOMATICALLY TO ALTN MODE

SOFT MODE: AUTO SWITCHING AND NORM STILL SHOWN IN THE SWITCH

HARD: MANUALLY SELECTED

13

IS THE A/T WORKING IN EITHER ALTN AND NORMAL MODE?

YES IT DOES

14

WHICH FEATURE PROVIDE THE EEC?

OVERSPEED PROTECTION, START MONITORING,THRUST RAMPING,TAP,IDLE SELECTION,AUTO RELIGHT,IGNITION,

15

HOW DOES IT WORK THE OVERSPEED PROTECTION ?

CONTROLLING THE N2 RPM AND ADJUSTING THE FUEL FLOW,IF THE OVERSPEED OCCURS AND PERSIST ENGINE WILL BE SHUTDOWN

16

THRUST RAMPING FEATURE?

TO AVOID AND REDUCE HIGH STRESS ON THE FAN BLADE DURING TAKE OFF IN HIGH GUST OR CROSSWINDS THE TAKE OFF THRUST IS SLOWLY AND GRADUALLY SET,DUE TO TRUST RAMPING TAKE OFF THRUST MAY NOT BE AVAILABLE UNTIL 65 KTS

17

WHEN THE EEC COMAND A SHUT DOWN OF THE ENGINE ON GRD?

WHEN ON GRD ,THRUST LEVER IDLE AND ENGINE IS ABOVE IDLE SPEED AND NOT DECELERATING NORMALLY

18

WHAT IS THE TAP?

(THRUST ASYMMETRY PROTECTION) IS AN AUTOMATIC FEATURE THAT PROVIDE PROTECTION AGAINST ASYMMETRIC THRUST CONDITION DURING TAKE OFF OR GO AROUND LIMITING OR REDUCING THE HIGHER THRUST IN AN ENGINE

19

WHAT THE TAP ENHANCES?

LOWER APPR SPEED
INCREASE ENGINE OUT CONTROL
FULL RATED THRUST AVAILABLE FOR ALL ENGINE OPS AT ANY SPEED OR WEIGHT

20

WHAT IS THE TBV?

TRANSIENT BLEED VALVE,IT S PURPOSE IS TO UNLOAD THE COMPRESSOR DURING ACCELERATIONS

21

WHAT IF THE TBV STUCK OPEN?

AND “ENG TBV OPEN “EICA APPEAR Associated reverser is deactivated or if it happen during REV OPERATION THE AFFECTED REV IS LIMITED TO IDLE

22

WHEN THE “ENG TBV OPEN” EICAS SHOWS

BELOW 80 KTS ON GRD

23

WHICH IDLE SELECTION ARE AVAILABLE ?

MINIMUM IDLE

ICE IDLE

APPROACH IDLE

24

WHEN IS THE APPROACH IDLE SELECTED

WHEN FLAPS ARE 25 OR MORE AND GEAR DOWN

25

WHEN ICE IDLE IS SELECTED?

WHEN EAI IS ON

26

WHAT IS THE ICA?

ICE CRYSTAL ANTI ICE,AUTOMATIC FEATURE,ACTIVES ONLY ABOVE 30000FT LAST 30 MIN WITH INCREMENTS OF 15 MIN MORE, AND STOPS DESCENDING BELOW 28500 FT

27

HOW THE ENGINE CAN BE STARTED>

USING ONLY THE AUTOSTART

28

WHAT IS CONTROLLING THE START SWITCH?

THE STARTERS

29

WHAT IS CONTROLLING THE FUEL CONTROL SWITCH?

IT CONTROLS FUEL AND IGNITION

30

WHICH SOURCE CAN BE USED TO START THE ENGINE?

APU EXT POWER OR THE OTHER ENGINE