EEC

Question 1

What does the EEC use as the controlling parameter (GE)?

Answer 1

• N1

FCOM, VOL 2; 7.20.3

Question 2

What protection features are provided in the EEC Normal mode?

Answer 2

• Thrust limiting
• Maintains constant thrust, compensating for dynamic temperature and pressure.
• Compensates for bleed requirements
• Overspeed protection(FCOM, VOL 2, 7.20.5)
  FCOM, VOL 2; 7.20.4

Question 3

What action should be taken prior to manual selection of EEC alternate mode?

Answer 3

• Thrust lever should be moved aft. Thrust increases when alternate mode is
selected manually.
Thrust does not change when the EEC transfers control from normal mode
to alternate mode.

FCOM, VOL 2; 7.20.5

Question 4

What occurs in the autothrottle system when any EEC control is changed to alternate mode?

Answer 4

• The autothrottles disconnect, but can be reconnected when all EECs
have been changed to alternate mode.
FCOM, VOL 2; 7.20.5

Question 5

What EEC normal mode protection feature is not available in EEC Alternate mode?

Answer 5

• Thrust limiting at maximum N1 (maximum thrust can be achieved prior to full
forward thrust lever position)

FCOM, VOL 2; 7.20.4

Question 6

What feature of the EEC provides overspeed protection?

Answer 6

• Fuel metering unit

VOL 2; 7.20.5

Question 7

When does the EEC select approach idle?

Answer 7

• Flaps in a landing position
• Continuous ignition ON
• During thrust reverser operation
- Nacelle anti-ice operation
   FCOM, VOL 2, 7.20.5

Question 8

How long is approach idle maintained after touchdown?

Answer 8

• 5 seconds

FCOCM, VOL 2, 7.20.5