Engines

Question 1

What is the model of the GE engines we have? And it’s rated thrust?

Pratt Engines?

Answer 1

CF6-80C2-B5F

56,500 lbs of thrust

PW-4056

57,100 lbs of thrust

Question 2

How do you cancel an engine exceedance red box?

How do you recall it again?

Answer 2

Push the cancel button on the DSP

Push the recall button

Question 3

What does the amber band mean on the EGT bar?

For how long is the amber band exceedance inhibited on takeoff or go around?

Answer 3

MCT

5 min

Question 4

If your secondary EICAS display fails and you want to see all your engine instruments on the primary in compact mode how do you do that?

Answer 4

Press ENG on the DSP

Question 5

What happens if you’re viewing a synoptic on the secondary EICAS and you have an engine exceedance?

Answer 5

The primary EICAS goes to compact automatically indicating what the exceedance is

Question 6

When is approach idle active?

Answer 6

Flaps to landing position

Or NAC is on

Question 7

Is there thrust limit protection when in manually selected alternate EECmode?

Answer 7

No, if they are near full forward they will exceed it

Question 8

ENG 1,2,3,4 EEC MODE

ALTN

Answer 8

EEC is in alternate control mode.

Objective: place all EEC in alternate

Question 9

> ENG 1,2,3,4 LIM PROT

Answer 9

EEC is in the alternate mode and command N1 is more than the limit

Question 10

ENG 1,2,3,4 FUEL VLV

Answer 10

One or more of these occur:

The engine fuel valve NIPS

Fuel spar valve NIPS

Question 11

> ENG 1,2,3,4 RPM LIM

Answer 11

N2 red line limit restricts engine thrust

Question 12

> IDLE DISAGREE

Answer 12

1 or more engines are not idling at the same rpm (app vs min idle)

Question 13

> ENG 1,2,3,4 REVERSER

Answer 13

On the ground, a fault occurs in the thrust lever position

Question 14

ENG 1,2,3,4 START VLV

Answer 14

Start valve is not in the commanded position

Question 15

> ENG CONTROLS

Answer 15

3-4 EEC systems opérate in degraded mode. Systems don’t have full redundancy.

Question 16

ENG IGNITION

Answer 16

CONT IGN SYS Has failed

Question 17

ENG 1,2,3,4 FAIL

Answer 17

An eng fail

Or

Flameout

Question 18

ENG 1,2,3,4 Control

Answer 18

EEC sys fault occurs

Question 19

> AUTOSTART OFF

Answer 19

N919CA AND N952CA only

Engine Autostart switch is off

Question 20

APU FUEL

Answer 20

Low pump pressure is detected when activated

Or

APU fuel valve NIPS

Question 21

What does a magenta oil quantity mean?

Answer 21

Low oil

Question 22

What is the certified vibration limit?

If the vibration monitoring system cannot detect if N1 or N2 are the culprits what does the indicating system show?

Answer 22

There is none, however a magenta vibration notes the high vib

BB- broadband (vibration over whole engine)

Question 23

ENG 1,2,3,4 OIL PRESS

Answer 23

Low oil press

Engine damage or failure possible

Question 24

ENG 1,2,3,4 OIL TEMP

Answer 24

High oil temp

Possible engine damage may occur

Question 25

ENG 1,2,3,4 FUEL VLV

Answer 25

One or more of these: Engine fuel valve NIPS Spar valve NIPS If during start, engine won’t start. In shutdown, engine continues to run until remaining fuel is burned.

Question 26

What does the light mean in the start switch?

Answer 26

Start valve open

Question 27

When does the start valve open on start?

Answer 27

When fuel control switch is in run.

Question 28

What does the red limit line on EGT signify during start?

Answer 28

Max start temp

Question 29

What 3 things does Autostart not monitor?

Answer 29

N1 Oil temp Oil press Abort or shutdown if no N1 or oil press by Idle N2

Question 30

What does Autostart do if it does not detect EGT rise?

Answer 30

Cuts fuel and ignition, motors for 30 secs. Then applied ignition to both igniters and fuel . Three attempts before aborting Autostart Motors for 30 secs before start and bleed air valves close.

Question 31

If the Autostart detects an EGT rise but detects a hot or hung start what does it do?

Answer 31

it cuts fuel, adjust fuel schedule and reapplies for another attempt.

Question 32

In a manual start when to add fuel?

Answer 32

When it reaches the fuel on indicator on n2

Question 33

When will autostart terminaré start attempts for an inflight start?

Answer 33

When the engine starts or the pilots selects fuel cutoff

Question 34

If the auto igniter is in single what does it do each flight?

Answer 34

Alternates between 1&2 every other flight

Question 35

When does auto ignition activate?

Answer 35

Start with less than 50% N2 Flaps out of up NAC ON FLAMEOUT (both)

Question 36

What does selecting stby ignition to 1 or 2 do?

Answer 36

Applies stby power as the power to that igniter continuously In norm, it is powered by AC pwr. However if the AC power is not powered igniter 1 is powered by stby power continuously.

Question 37

STARTER CUTOUT 1,2,3,4

Answer 37

Start valve does not close (at 50% N2 after start finished) | Light in start switch doesn’t go out

Question 38

ENG 1,2,3,4 AUTOSTART

Answer 38

Autostart ON, engine failed to start. Fault detected in Autostart system Start parameters exceeded Manual start EGT parameters rapidly reaching limit Manual start RUN selected too early.

Question 39

What does raising the reverse thrust levers to idle do?

Answer 39

Disc auto throttle Raises auto speed brakes if not armed before landing (Does the same on a rejected takeoff)

Question 40

>ENG 1, 2,3,4 REVERSER

Answer 40

Fault detected in the reverser system

Question 41

ENG 1,2,3,4 FUEL FILT

Answer 41

Fuel contamination can cause fuel to bypass the engine fuel filter

Question 42

ENG 1,2,3,4 LOW IDLE

Answer 42

ENGINE IDLE not in approach setting when commanded Advance thrust til extinguished

Question 43

ENG 1,2,3,4 OIL FILT

Answer 43

Oil Filter contamination can cause oil to bypass the oil filter

Question 44

>ENG 1,2,3,4 SHUTDOWN

Answer 44

Engine was shutdown by the fuel control switch or the engine fire switch.

Question 45

What protections do you have with the EEC in Norm? In ALTN? Do you have autothrottles in ALTN?

Answer 45

Overboost and Overspeed Only overspeed No

Question 46

On the Pratt engines by what N2 must you have an N1 indication? After how many minutes must the engine reach idle N2?

Answer 46

40%N2 2 min

Question 47

What is the cool down time fir the Pratt’s and GE’s after landing?

Answer 47

Pratt’s 5 min | GE 3 min

Question 48

What’s the difference in warm up between the GE’s and Pratt’s before takeoff?

Answer 48

GE’s must be above bottom of oil temp scale and 3 min run Pratt’s oil temp above amber band and if engines shutdown more than 2 hours run for 5 min

Question 49

What’s the difference in cool down for the GE’s vs the Pratt’s after landing?

Answer 49

GE -3 min Pratt - 5 min

Question 50

For GE’s what limitations are there for cold soaked engines?

Answer 50

More than 4 hours at -30C or below DONT START ENGINE. Call maintenance to do procedure.

Question 51

What’s the difference in engine run up between GE and Pratt?

Answer 51

GE- 60% n1 for 30 sec every 30 min PRATT- 50% N1 for 1 Sec every 15 min