If you get an undemanded movement, do a test of the system.

The air inlet section through which the air enters the compressor section includes items such as guide vanes, shrouds and cases.

Engine system includes the components and units used to control and direct the flow of lubrication through the engine from the inlet fitting to the outlet fitting.

The control section controls the pitch of the propeller blades, but does not include any parts which rotate with the propeller assembly.

Engine mounts refer to the framework, either of build-up construction or forgings, which support the engine and attach it to the nacelle or pylon.

This section in the maintenance manual shall cover subjects such as engine changes, run-up, externally-mounted spare power plants, etc., while in the overhaul manual, it shall cover subjects such as power plant build-up, teardown, etc.

Propeller system includes the complete mechanical or electrical propeller, pumps, motors, governor, alternators, and those units and components external to or integral with the engine used to control the propeller blade angel.

Collector/ Nozzle includes items such as collector rings, exhaust and thrust augmentor ducts, variable nozzles, actuators, plumbing, linkages, position indicators, warning systems, etc.

Those units and components are used to generate, control, distribute electrical current to ignite the fuel air mixture in the cylinders of reciprocating engines or in the combustion chambers or thrust augmentors of turbine engines.

That portion of the system from the main quick disconnect to the engine, which distributes fuel to the engine burner section and the thrust augmentor. Includes items such as plumbing, pumps, temperature regulators, valves, filters, manifold, nozzles, etc. Does not include the main or thrust augmentor fuel control.

For reciprocating engines, those units and components which deliver metered fuel and air to the engine. The fuel portion includes the carburetor, master control from the inlet side to the discharge nozzle(s), injection pumps, carburetor, injection nozzles and fuel primer.