A flight engineer (FE), also sometimes called an air engineer, is a member of an aircraft`s flight crew and is the person who monitors and operates its complex aircraft systems. In the early era of aviation, the position was sometimes referred to as the `air mechanic`. Flight engineers can still be found on some larger fixed-wing airplanes, and...... Found on http://en.wikipedia.org/wiki/Flight_engineer
A member of the crew of a large aeroplane who controls the engines in the air, thus relieving the pilot of an onerous duty.
Found on https://www.encyclo.co.uk/local/20784