Powerplant

Question 1

On ground, when is the start sequence automatically aborted?

4

Answer 1

In case of hot start, hung start, stall or no light up

Question 2

Automatic engine start sequence

Answer 2

IGN N2 >16%
HP FUEL valve opening N2 > 22%
START VALVE CLOSURE N2 > 50%

Question 3

How is FADEC powered?

Answer 3

Self powered about 12% N2

I’m case of power loss powered by Aircraft elec system

Question 4

EGT LIMIT TOGA (CFM56)

Answer 4

950 deg
5 min both eng running
10 min OEI

Question 5

Max continuous oil temp

Answer 5

140 C

Question 6

When can max cont oil temp be exceeded?

Answer 6

Up to 155 C

For 15min

Question 7

Min oil starting temp CEO

Answer 7

-40 C

Question 8

Maximum N1

Answer 8

104%

Question 9

Maximum N2

Answer 9

105%

Question 10

Length of pause between cycles on the ground

Answer 10

20 sec

Question 11

Starter cool down time requirements

Answer 11

15min after 4 attempts

Question 12

EGT red limit displayed

Answer 12

950 C

Question 13

During an automatic engine start when does the pack flow close?

Answer 13

When eng mod sel IGN

Question 14

Max EGT during engine start

Answer 14

725 C

Question 15

How is oiled cooled?

2

Answer 15

Fuel oil heat exchanger

Servo fuel heater

Question 16

Oil pressure turns RED when lower than

Answer 16

13 psi

Question 17

When does REV GREEN appear on N1 indicator

Answer 17

Thrust rev door open