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Boeing 777 > ENGINES & APU > Flashcards

ENGINES & APU Flashcards

1
Q

WHAT TYPE OF ENGINE IS USING THE B777?

A

GE-90-115BL (115,540 POUNDS) EACH

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2
Q

HOW CAN BE SELECTED THE TAKE OFF BUMP?

A

FROM THE CDU “TRUST LIM” PAGE OR “AUTOMATICALLY” POSITIONING THE TRUST LEVERS FULL FWD AND WITHIN THE BUMP LIMIT REGION ( ALTITUDE AND AMBIENT TEMP)

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3
Q

WHICH ARE THE PRIMARY ENGINE PARAMETERS?

A

N1 & EGT

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4
Q

WHAT ARE THE SECONDARY ENGINE PARAMETERS?

A

N2, FF, OIL PRESSURE, OIL TEMP, OIL QTY, VIB

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5
Q

WHEN THE SECONDARY ENGINE INDICATION ARE AUTOMATICALLY SHOWN?

A

WHEN THE DISPLAY RECEIVE THE INITIAL POWER UP AND : FUEL CONTROL SWITCH MOVED TO CUTOFF, ENGINE FIRE SWITCH IS PULLED IN FLIGHT, ENG FUEL FLOW L,R EICAS MESSAGE IS SHOWN, SECONDARY ENGINE PARAMETERS EXCEEDED, ENGINE N2 IS BELOW IDLE IN FLIGHT

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6
Q

WHICH PARAMENTERS GENERATE AN EICAS MESSAGE?

A

ONLY THE ONE WITH OPERATING LIMIT

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7
Q

HOW IT IS DISPLAYED THE MCT IN THE EGT DIAL?

A

AMBER

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8
Q

WHEN DOES NOT APPLY THE EGT MCT AMBER LINE?

A

DURING TAKE OFF AND GO AROUND.

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9
Q

WHEN. AND FOR HOW LONG THE EGT COLOR CHANGE DUE TO AN EXCEEDANCE IS INHIBITED?

A

DURING TAKE OFF AND GO AROUND, 5 MIN FOR TWO ENGINE OPS AND UP TO 10 MIN FOR OEI

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10
Q

WHAT HAPPEN IF N1,N2 OR EGT AND OIL PRESSURE REACH THE OPERATING LIMIT

A

INDICATIONS TURNS ALL RED, BACK TO WHITE ONCE PARAMETERS GOES BELOW THE LIMIT,
THE BOX REMAIN RED FOR N1,N2 AND EGT AND USING CANC/RECALL CAN BE MADE WHITE AND RECALL RED IF NEEDED

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11
Q

ARE THE EGT INDICATION ACCEPTABLE IN AMBER?

A

YES DURING TAKE OFF

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12
Q

HOW DOES OIL QTY AND ENGINE VIBRATION SHOWS MULFUCTIONS?

A

WHITE BACKGROUND WITH BLACK TEXT, FOR QTY A “LO” IS SHOWED NEXT TO THE INDICATION

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13
Q

HOW MAMNY CONTROL MODE HAS AN EEC?

A

2 NORMAL MODE AND ALTN MODE

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14
Q

IN BOTH MODE WHICH IS THE PARAMETERS THAT EEC USES TO SET THE TRUST?

A

N1

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15
Q

HOW MANY MODE AS THE ALTERNATE “MODE” OF THE EEC?

A

2 A SOFT MODE AND A HARD MODE.

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16
Q

WHEN THE EEC CHANGES MODE FROM NORMAL TO ALTN?

A

IF REQUIRED SIGNAL ARE NOT AVAILABLE.

17
Q

HOW DO WE RECOGNISE A SOFT FROM HARD MODE

A

AUTO SWITCH IS DIRECTLY IN SOFT MODE SWITCH SHOWING “ON” STILL

MANUALLY SELECTED AND SWITCH SHOWING “ALTN” IS HARD MODE

BOTH REVERSION ARE INDICATED BY AN EICAS MESSAGE “ENG EEC MODE (L,R)

18
Q

WHAT HAPPEN TO THE A/T WHENEVER AUTOMATIC TRANSFER FROM NORMAL MODE TO ALTN HAPPENS?

A

REMAIN ENGAGED.

A/T REMAIN CONNECTED WHENEVER THE EEC IS IN ALTN MODE

19
Q

WHATS THE DIFFERENCE IN TRUST IN BTW THE ALTN AND NORMAL MODE OF THE EEC?

A

THRUST AT THE SAME “THRUST LEVER POSITION” IS HIGHER

20
Q

IN ALTN MODE IS THERE ANY TRUST PROTECTION ?

A

NO TRUST PROTECTION AVAILABLE. OVERBOOST MAY HAPPEN

21
Q

HOW DOES IT WORK THE OVER SPEED PROTECTION PROVIDED BY THE EEC?

A

APPROACHING AN N1,N2 OVERSPEED THE EEC COMMAND A REDUCTION OF FF. EICAS ENG RPM LMITED

22
Q

HOW MANY IDLE TRUST WE HAVE ON 777 ?

A

APPROACH IDLE AND MINIMUM IDLE WHICH IS LOWER THAN THE APPROACH IDLE

23
Q

WHEN THE EEC SWITCH ON THE APPROACH IDLE?

A

EAI OPERATING

FLAPS TO 25 OR GREATER

1 HYD DEMAND “AIR DRIVEN” PUMP INOP AND FLAPS OUT OF UP

OPPOSITE ENGINE BLEED VALVE CLSD

24
Q

WHAT IS THE THRUST CONTROL MALFUNCTION PROTECTION?

A

EEC SHUT DOWN THE AFFECTED ENGINE IF:

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

25
Q

HOW WE CAN START THE ENGINE ON 777 WHICH MODE?

A

EITHER USING AUTOSTART OR MANUALLY (PILOT MONITORED) , AUTOSTART IS THE PRIMARY AND PREFERRED METHOD

26
Q

WHAT IS COMMANDING THE START VALVE?

A

START / IGNITION SWITCH

27
Q

WHAT IS CONTROLLING IGNITION AND FUEL FLOW?

A

FUEL CONTROL SWITCH

28
Q

WHEN THE EEC COMMAND THE STARTER CUT OUT OR THE START SWITCH?

A

WHEN N2 IS AT IDLE RPM

29
Q

WITH AUTOSTART ON WHAT IS THE SEQUENCE START ON GRD AND IN THE AIR?

A

ON GRD SEQUENCE START FROM START/IGN IN FLIGHT FROM FUEL CONTROL SWITCH

30
Q

WHAT IS THE SEQUENCE OF OPENING VALVES FOR A START WITH THE AUTOSTART

A

START IGN OPENS THE START VALVE ,

THE FUEL CONTROL SWITCH OPENS THE SPARE VALVE BUT NOT THE ENGINE FUEL VALVE

ENGINE FUEL VALVE IS OPENED BY THE EEC ENERGIZING THE IGNITORS

Boeing 777 (5 decks)

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