These throttle shaft bushings are installed into NAY9E1 carburetors installed on Pratt & Whitney R-1340 series engines. Presently the original equipment manufacturer no longer supports the NAY9E1 carburetor, and new throttle shaft bushings are no longer available on the surplus market.

Production Information

Applicable Components: NAY9E1

Applicable Engines: Pratt & Whitney R-1340-40, -47, -48, -48A, -49, -51, -52, -57, -59, -61, -AN1, -AN2, -AN3, -S1H2, -S1H4

Part Numbers Produced: ST-P20148, ST-P20148-1, ST-P20148-2

Part Numbers Replaced: P20148, P20148-1, P20148-2

These bearings are installed into PESCO, Air Tractor and Donallco Fuel Pumps installed on various aircraft and engines. Presently the original equipment manufacturer no longer supports these fuel pumps and new bearings are no longer available on the surplus market.

Production Information

Applicable Components: Please click the button below for more information.

Applicable Engines/Aircraft: Please click the button below for more information.

Part Numbers Produced: ST-R400-10, ST-R400-61BA, ST-R600-10, ST-R600-87A

Part Numbers Replaced: R400-10, R400-61BA, R600-10, R600-87A

Due to the obsolete nature of carbon pile type voltage regulators, the procurement of parts is growing more difficult every year to procure. This repair specification was created to permit the repair of existing sub-components of the carbon pile voltage regulator, and allow for the manufacturing of new sub-components, and the replacement of electrical subcomponents, which are equivalent or better in performance, with commonly available standard electrical components.

Production Information

Applicable Components: Please click the button below for more information.

Applicable Engines/Aircraft: Please click the button below for more information.

Part Numbers Produced: Please click the button below for more information.

Part Numbers Replaced: Please click the button below for more information.