B-737 Ng - Engines

Front 1

When would the CA do the Aborted Engine Start Procedure? (4)

Back 1

1. The N1 or N2 does not increase or increases very slowly after the EGT increases

2. There is no oil pressure indication by the time the engine is stable at idle

3. The EGT does not increase by 15 seconds after the Engine Start Lever is moved to idle detent

4. The EGT quickly nears or exceeds the start limit

Front 2

When does the Captain move the Engine Start Lever to the idle detent for Engine Start?

Back 2

After N1 rotation and passing 25% N2

Front 3

During Engine Start when should the Engine start switches move from GRD to AUTO/OFF?

Back 3

56% N2 if they don't move automatically

Front 4

When is the Engine stable at idle?

Back 4

When the EGT start limit redline is no longer shown

Front 5

Ignition switch in CONT. What does that do in flight?

Back 5

Provides ignition to selected ignitor when the engine is operating or in flight to both ignitors when N2 is below idle and the Engine Start Lever is in idle

Front 6

What does FLT mode do on the Engine Start switch?

Back 6

Provides ignition to BOTH ignitors when engine start Lever is in idle

Front 7

Why would the reverser lights be displayed on the aft overhead panel?

Back 7

A reverser fault has occurred

OR Reverser position doesn't agree with lever position

Front 8

If the EEC displays in amber what has occurred?

Back 8

The EEC is in Alternate mode

Front 9

What does moving the Engine Start Levers to idle do?

Back 9

Opens the 2 fuel shutoff valves and energizes ignition system

Front 10

If the EEC is in normal mode what will be displayed?

Back 10

ON in white: values are generated from sensed atmospheric conditions

Front 11

If the APU MAINT switch is illuminated can the APU be operated?

Back 11

Yes

Front 12

Can the APU automatically shutdown?

Back 12

Yes due to any of the following;

APU Fire

Overspeed, in which case the OVERSPEED light will also illuminate.

Fault detection, in which case the FAULT light will also illuminate.

Oil pressure is low AFTER THE START CYCLE IS COMPLETE, the LOW OIL PRESSURE light will also illuminate

Battery switch turned OFF

Front 13

What model of Engine is on the 737?

Back 13

CFM56-7B24

Front 14

How do you supply electrical power to the EEC?

Back 14

It has its own IDG on the accessory gearbox

Front 15

When does the EEC automatically change modes and what mode will it change to?

Back 15

When the required signals are not received the EEC will automatically change to ALTN soft mode

Front 16

How is N1 thrust calculated?

Back 16

The EEC uses sensed flight conditions and bleed air demand to calculate N1 thrust settings. It compares commanded thrust with actual and adjusts fuel flow to achieve the commanded thrust.

Front 17

If the EEC is in Alternate mode what difference is their in power based on thrust lever position and is thrust protection provided?

Back 17

For a given thrust lever position, thrust is higher and there is no thrust protection in ALTN mode

Front 18

When does the EEC select approach idle?

Back 18

In flight if flaps are in landing configuration or EAI is on

Front 19

What is the point of approach idle?

Back 19

Improves acceleration time in event of a go around

Front 20

In both Normal and ALTN modes does the EEC provide N1 and N2 redline protection?

Back 20

Yes, in both modes

Front 21

Does the EEC provide EGT redline exceedance protection?

Back 21

NO, except during ground starts

Front 22

Is any overboost available on engines in ALTN mode in case of emergency?

Back 22

Yes in ALTN mode advancing thrust levers to full forward provides some overboost

Front 23

Can the engine control light come on in flight?

Back 23

No

Front 24

What does the ENGINE CONTROL light mean?

Back 24

Faults in the engine control system, will only show on the ground

Front 25

What does the MAINT light mean?

Back 25

APU has low oil quantity

Front 26

How long does the APU take to shutdown?

Back 26

60 seconds

Front 27

Are multiple engine start attempts allowed?

Back 27

Yes, each start attempt is limited to 2 minutes of starter usage. 10 seconds between each start

Front 28

When will the ENGINE CONTROL light illuminate?

Back 28

Engine is operating and the the airplane is on the ground AND;

Below 80 knots prior to takeoff OR

30 seconds after touchdown

Front 29

How many idle settings are there?

Back 29

3

Ground

Approach (EAI/landing flaps)

Flight

Front 30

What does moving the engine start switch to GRD do?

Back 30

Opens the starter valve

Front 31

AUTO position of the engine start switch does what?

Back 31

Provides Auto rollback protection if N2 drops below a limit

Front 32

If the reverser light is illuminated after landing what does that indicate?

Back 32

A disagreement between the lever and the reverser position

Front 33

Does the REVERSER light indicate you won't have reverse thrust available?

Back 33

No, the light only indicates when the reverse thrust lever moves to the closed position

Front 34

What start protections does the EEC provide during starting? Does it apply to ground and air starts?

Back 34

Hot starts

Engine stall (Compressor)

EGT Start exceedance

Wet starts

Only applies to starts on the ground

Front 35

When will the EEC automatically shutoff fuel and ignition during the start attempts?

Back 35

Hot start: impending or actual EGT exceedance

Wet Start: no rise in EGT within 15 seconds

Front 36

When will the REVERSER light illuminate?

Back 36

When the thrust reverser is commanded to stow and extinguishes 10 seconds later. If it last for more than 12 seconds a FAULT has occurred

Front 37

What is the power source for the R ignition switch?

Back 37

AC Standby bus (first flight of the day)

Front 38

What is the power source for the left ignition switch?

Back 38

Transfer bus