ejection systems

a. command ejection system--A system in which the pilot of an aircraft or the occupant of the other ejection seat(s) initiates ejection resulting in the automatic ejection of all occupants. b. command select ejection system--A system permitting the optional transfer from one crew station to another of the control of a command ejection system for automatic ejection of all occupants. c. independent ejection system--An ejection system which operates independently of other ejection systems installed in one aircraft. d. sequenced ejection system--A system which ejects the aircraft crew in sequence to ensure a safe minimum total time of escape without collision.