Downloaded from https://www.everyspec.com MIL-STD-1808C w/CHANGE 1 SYSTEM SUB-SYSTEM TITLE DEFINITION 75 ENGINE AIR For turbine engines, the subsystem external components and integral basic engine parts that go together to conduct air to various portions of the engine and to the extension shaft and torque meter, assembly, if any. Includes compressor bleed systems, cooling air systems, and heated air systems (engine anti-icing). Does not include aircraft anti-icing, engine starting systems or exhaust supplementary air systems.
00 GENERAL 10 ENGINE ANTI-ICING The portion of the system using bleed air to prevent or eliminate the formation of ice in all parts of the engine, includes valves, plumbing, wiring, radiators, etc. Excludes power plant cowling and electrical anti-icing (see System 30, ICE AND RAIN PROTECTION). 20 COOLING The portion of the system used to ventilate the engine and accessories. Includes valves, plumbing, wiring, jet pumps, vortex spoilers, etc. 30 COMPRESSOR CONTROL The portion of the system used to control the flow of air through the engine. Includes governors, valves, actuators, linkages, etc. Also includes the operation of variable stator blades.
Does not include maintenance covered in System 72, ENGINE. 40 INDICATING The portion of the system used to indicate temperature, pressure, control positions, etc., of the air systems. Includes transmitters, indicators, wiring, etc. 86