Powerplant

Question 1

How many lbs of thrust does the engine have

Answer 1

27,000

Question 2

What powers the accessory gearbox

Answer 2

HP (N2) compressor shaft

Question 3

What are the 3 idle modes

Answer 3

Modulated
Approach idle
Reverse idle

Question 4

What are the two degraded engine thrust setting modes (other then EPR)

What two systems are lost in degraded mode

Answer 4

Rated N1 mode. (Also manually selectable)

Degraded N1 mode (uses TLA only. Can overboost)

A/THR and aFloor

Question 5

Which igniters will be used during an

1. Automatic start
2. Manual start

Answer 5

1. One, alternating between the two between each start
2. Both are used

Question 6

How many channels does each FADEC have

Answer 6

2. Primary and backup

Question 7

When is the FADEC running on internal power

Answer 7

> 10% N2

Question 8

When does oil qty pulse green

Answer 8

<5,25qt

Question 9

What is min oil press

Answer 9

60psi

Question 10

Max oil temp

Answer 10

165
Or 155 for 15 min

Question 11

When is continuous ignition automatically turned on

Answer 11

Anti-Ice
TOGA thrust
Flex takeoff
Approach idle
Unscheduled drop of engine speed below idle
Surge

Question 12

TOGA thrust limitation, in minutes

Answer 12

5min
10min (engine out)

Question 13

Minimum oil temp for engine start

Answer 13

-40

Question 14

Engine start cycle

Answer 14

2min, 15 sec, 2 min, 15 sec, 1 min, 30 minutes

Question 15

When does the nacelle temp pulse green

Answer 15

Above 320 degrees

Question 16

When does VIB pulse

Answer 16

Above 5

Question 17

What protection does the fadec give during manual engine start

Answer 17

None, monitoring only

Question 18

When do the igniters and start valve disconnect during manual engine start

Answer 18

N2 43% for both

Question 19

What is the minimum oil quantity indication before start.

What is the regular engine oil consumption

Answer 19

11qt + estimated consumption

0.3qt/h

Question 20

Engine EGT TOGA/starting limit (degrees and minutes)

MCT EGT limit

Answer 20

635 (flashes red above)
5Min dual, 10min single engine

610

Question 21

Max flex temp is ISA +___

Answer 21

55

Question 22

When does the pack valve close during engine start

Answer 22

When selecting ign/start

Question 23

How many stages are in the low pressure compressor and turbine ?

High pressure compressor and turbine?

Answer 23

Low pressure= 5 low pressure compressors (1 fan, and 4 more stages) + 5 turbine stages

High pressure = 10 compressor stages and 2 turbine stages