Fuel System

Question 1

How many fuel pumps are there?

Answer 1

9 total: 4 wing fuel pumps, 2 center override/jettison pumps, 2 wing jettison pumps, left forward DC pump for APU

Question 2

How many fuel tanks and order of burn?

Answer 2

3 tanks, center tank is used first. After EICAS Fuel Low Center illuminates, turn off center pumps and scavenge pumps transfer any residual fuel into the main tanks