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Tempest AA9144-PMA
The Tempest AA9144 (McCauley OEM MS9144-01) is an FAA-PMA overhaul prop governor gasket.
- Helps prevent oil leakage at the governor mounting pad by restoring the sealing surface with a correct cross-referenced gasket.
- Supports consistent governor operation by maintaining a stable interface seal under normal engine oil pressure and temperature cycles.
- Improves maintenance outcomes by using a gasket listed as an improved design over legacy MS-style gaskets and tested beyond baseline MS requirements in distribution references.
AA9144 is a high-frequency replacement item in aviation maintenance for reciprocating engine constant speed propeller systems, especially during governor removal, reseal work, or accessory pad service.
Installation notes
Refer to the applicable governor and engine maintenance manual for full installation procedures, torque values, and inspection requirements.
- Clean and inspect both mating surfaces, and remove old gasket material without scratching the pad.
- Install the gasket in the correct orientation per the governor and engine manual, then torque mounting hardware to the specified value and sequence.
- After installation, perform the required operational run and check for leaks at the governor pad.
Applications and fitment
This gasket is widely used on reciprocating engine applications that previously specified MS or AN type governor gaskets, and it is commonly cross-referenced by OEM part number during parts identification. Always confirm applicability using the engine parts manual and governor installation data, particularly if the aircraft uses a specific governor model, spacer, or pad configuration.
Pilot John International supplies Tempest PMA propeller governor components to propeller overhaul shops, FBOs, MROs, and aviation maintenance technicians supporting aircraft maintenance and ground support.
| General Information | |
|---|---|
| Part # | AA9144 |
| Manufacturer | Tempest |
| Shipping Information | |
|---|---|
| Product Weight | 0.02 lbs. |
| Product Dimensions | 3.8 x 3 x 0.1 in. |
| Schedule B | 8807300010 |
| ECCN | 9A991.d |
| Specifications | |
|---|---|
| Common OEM and alternate P/N cross-references | MS9144-01, MS100009, 209217, 531083, B-20024, B20024 (verify the exact approved interchange for your engine and governor combination) |
| Performance and compliance notes | Cataloged as compliant with FAA gasket test requirements and referenced as tested to 1000 psi in distribution materials. Confirm application requirements in approved maintenance data. |
| Tempest P/N | AA9144 |
| Type | Governor drive pad gasket (propeller governor to engine mounting interface seal) |
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AIRCRAFT COMPATIBILITY
| Compatible Aircraft* |
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QUESTIONS & ANSWERS
Tempest AA9144 is a direct FAA-PMA replacement for OEM part numbers MS9144-01, B-20024, and other equivalents. Always verify compatibility with your specific propeller governor model and applicable maintenance documentation before placing an order.
The Tempest AA9144 Propeller Governor Gasket seals the mounting interface between the governor and the engine accessory drive pad, preventing oil leakage and preserving the oil pressure essential for reliable blade pitch control and RPM regulation. Maintaining a stable seal under engine operating conditions helps support consistent governor performance and reduces the risk of oil seepage at the governor pad.
PJi offers the Tempest AA9144 as an FAA-PMA-approved replacement gasket for OEM part numbers MS9144-01, B-20024, and other equivalents. View our full selection of Tempest propeller governor parts to find the correct component for your application.
For a deeper look at how propeller governors work, why proper maintenance matters, and how to identify compatible replacement components, refer to our Ultimate Guide to Aircraft Propeller Governor Maintenance.
