MIL-S-26688, MILITARY SPECIFICATION: SEAT; PASSENGER, AFT FACING, TRANSPORT AIRCRAFT (10-MAR-1959)

MIL-S-26688, MILITARY SPECIFICATION: SEAT; PASSENGER, AFT FACING, TRANSPORT AIRCRAFT (10-MAR-1959)., This specification establishes the requirements for two types of standard aft facing passenger seats for use in transport aircraft. Seats shall be one of the following types, as specified: Type I - Double Passenger Seat AND Type II - Triple Passenger Seat.