Systems - EEC & Autostart

Question 1

What do the EECs protect the engines against in the normal mode?

Answer 1

• thrust limit
• overspeed protection

Question 2

What do the EECs protect the engines against in the ALTN mode?

Answer 2

Overspeed

Question 3

How do the EECs select the soft alternate mode?

Answer 3

Automatically

Question 4

Why do we then manually select the hard-alternate mode on both engines?

Answer 4

To avoid split thrust

Question 5

What must we do prior to manually selecting the hard alternate mode?

Answer 5

Reduce the thrust on the good EEC engine

Question 6

Is auto throttle available in the hard alternate mode?

Answer 6

Yes

Question 7

How many attempts will autostart make to start an engine (Ground/Flight…GE)

Answer 7

Ground - it will do 3 attempts
Inflight - unlimited

Question 8

Does it do anything different on each attempt at a restart?

Answer 8

Ground - it uses both ignitors on the second and 3rd attempts and alters the fuel schedule

Question 9

When will AutoStart not attempt another start? (Ground)

Answer 9

• no N1 rotation
• insufficient air pressure
• starter shaft fails
• start time exceeds starter duty cycle

Question 10

What does AutoStart not monitor?

Answer 10

• oil pressure
• oil temp

Question 11

What action would you take for no oil pressure?

Answer 11

Bring the fuel control switch to cutoff

Question 12

What is the controlling parameter in the normal mode?

Answer 12

N1

Question 13

When is continuous ignition automatically applied?

Answer 13

• During a detected flameout condition with Engine A/I ON
• flaps out of UP