Flight engineer
…reciprocating engine airplanes (Boeing 307 and 377, DC-6, DC-7, Constellation) and early two-, three- and four-engine jets (Boeing 707, 727, early 747s, DC-8, DC-10, L-1011, early A300s) required them. Smaller twinjets (DC-9, 737, BAC 1-11, Caravelle, ) were never complex enough to require a flight…