MIL-P-8686, MILITARY SPECIFICATION, POWER UNITS, AIRCRAFT AUXILIARY, GAS-TURBINE-TYPE, GENERAL SPECIFICATION FOR (4 NOV 1955)

MIL-P-8686, MILITARY SPECIFICATION, POWER UNITS, AIRCRAFT AUXILIARY, GAS-TURBINE-TYPE, GENERAL SPECIFICATION FOR (4 NOV 1955)., This specification covers the general requirements for gas-turbine-type aircraft auxiliary power units.