"Jet aircraft." . . "Propulsion system performance." . . "Accident prevention." . . "Flight simulation." . . "Accidents Prevention." . . "Aircraft accidents." . . "Transport aircraft." . . "Ground tests." . . . . "Thrust control." . . . . . . . . . . . . . . . . . . . . . . . . . "Piloted simulation tests of propulsion control as backup to loss of primary flight controls for a mid-size jet transport"@en . . . . . . "Flight control." . . "Aircraft landing." . .