MIL-S-85419 (AS), MILITARY SPECIFICATION, STARTER/AUXILIARY POWER UNIT, AIRCRAFT ENGINE, GAS TURBINE TYPE, DETAILED SPECIFICATION FOR (1 OCT 1981)., This specification covers a gas turbine starter/APU forstarting the main aircraft engine and providing emergencyelectrical power on the AV-8B aircraft. This specification alsoestablishes the content and format to be used by the supplier forthe preparation of the gas turbine starter/APU modelspecification.