. . "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 rotary wing helicopters. A similar crew position exists on some spacecraft. For U.S."@en .