EECs

Question 1

What do the EECs do with respect to fuel flow?

Answer 1

command fuel metering unit to adjust fuel flow

Question 2

When do the EECs command Approach Idle?

Answer 2

• Nacelle Anti-Ice on
• Flaps in landing position
• CONT IGN on

Question 3

What do the EECs do in Normal mode?

Answer 3

• set thrust by controlling N1 based on thrust lever position
• keeps thrust constant independent of outside air temperature and pressure
• adjusts for changes in NAI, WAI, and airplane pressurization bleed requirements
  - this allows a fixed thrust lever position throughout climb
• Overboost protection