Propeller/Propulsors

For reports of defective hubs which house and support the rotating blades. Includes the dome, but notthe blade actuating mechanism filed in JASC code 6111 or the attachment to engine flange in JASCcode 6110.

Hydraulic Power

The unit which relieves system relief pressure at a preset pressure. Typical parts are seal, spring,housing, relief valve, etc.

Propeller/Propulsors

For general reports of propeller speed controlling other than the governor unit or the synchronizer.Includes the controlling systems of propellers regardless of the propeller type. (Includes propellerregulator, negative torque switch, and the rigging mechanism). Also includes governor control linkage,levers, cable, and associated brackets from the cockpit to the governor; and the feather andunfeathering systems except the pump and accumulator. Typical parts are cable, bellcrank, lever, rodend, pressure switch, solenoid valve, beta switch, etc.

Hydraulic Power

The component which stores hydraulic fluid. Typical parts are reservoir, filler cap, filler neck, sightgauge, seal, etc.

Propeller/Propulsors

The unit which controls the synchronization of propellers on multi-engine aircraft. Typical parts aresynchronizer actuator, computer, synchrophaser, control unit, etc.

Hydraulic Power

The unit that maintains a preset operating system pressure to the using systems. Typical parts areregulator, seal, case, etc.

Propeller/Propulsors

The unit which controls the propeller blade angle, but is limited to parts in and on the governor. Doesnot include airframe furnished control linkage from the cockpit which is filed in JASC code 6120. Thecomponent make and model should be included in the report as well as the number of the defective part.Typical parts are shaft, flyweight, governor, spring, arm, seal, beta valve, pilot valve, head, etc.

Hydraulic Power

The portion of the main system which is classified as auxiliary, emergency, or standby, and which isused to supplement or take the place of the main hydraulic fluid to the using system. Does not includethe supply valves to the using systems. Typical parts are tank, accumulator, valve, pump, lever, cables,switch, plumbing, wiring, external connectors, and miscellaneous auxiliary system parts other than thoselisted in JASC codes 2921 through 2934.

Propeller/Propulsors

The component and parts which store and deliver an energy charge for propeller feathering andunfeathering. Includes the pump and associated motor, switch, circuitry and plumbing which providesthe force for feathering the propeller blades for stopping the engine's rotation. Does not includepropeller feathering system components which are coded in JASC code 6120, such as lever rod end,adjustment screw, solenoid, valves, etc. Typical parts are pump, motor, switch, accumulator, air valve,seal, etc.

Hydraulic Power

The component which provides for pressure surge to maintain a constant pressure in the auxiliarysystem. Typical parts are accumulator, seal, end cap and air valve, etc.