Tempest AGA-20291-PMA
The Tempest AGA-20291 (McCauley OEM A-20291) is an FAA-PMA replacement flyweight pin for McCauley applications.
- Supports stable RPM control by maintaining proper flyweight articulation and alignment in the speed-sensing assembly.
- Helps reduce hunting or sluggish response when worn pins create looseness, uneven motion, or abnormal friction.
- Commonly replaced during overhaul when inspection shows wear steps, scoring, corrosion, or poor fit in the flyweight pin interfaces.
Flyweight hardware is a core part of constant speed governing, especially in aviation where consistent RPM regulation and repeatable response are critical.
Installation notes
Always refer to the approved maintenance and overhaul manual for full installation guidance before starting work.
- Inspect flyweight bores, retainers, and contact surfaces for matched wear and replace components as required by the approved overhaul data.
- Confirm smooth flyweight movement after assembly and complete the required operational checks per approved maintenance data.
Applications and fitment
Used on McCauley governors where OEM A-20291 is specified. Confirm compatibility by matching the OEM part number and verifying governor model and serial number applicability in approved maintenance data.
Tempest AGA-20291 is the direct replacement for OEM A-20291. Match the OEM part number and confirm applicability by governor model and serial number in the approved maintenance data.
Pilot John International offers Tempest PMA propeller governor parts for propeller overhaul shops, FBOs, and aviation technicians to support aircraft maintenance and ground support.
| General Information | |
|---|---|
| Part # | AGA-20291 |
| Manufacturer | Tempest |
| Shipping Information | |
|---|---|
| Product Weight | 0.01 lbs. |
| Product Dimensions | 1.3 x 0.1 x 0.1 in. |
| Schedule B | 8807300010 |
| ECCN | 9A991.d |
| Specifications | |
|---|---|
| Approval | FAA-PMA replacement part |
| OEM P/N | A-20291 |
| System | McCauley propeller governor, flyweight speed-sensing mechanism |
| Tempest P/N | AGA-20291 |
| Type | Pin, flyweight |
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AIRCRAFT COMPATIBILITY
| Compatible Aircraft* | |
|---|---|
| Cessna | 310 |
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QUESTIONS & ANSWERS
Tempest AGA-20291 is a direct FAA-PMA replacement for McCauley P/N A-20291. Always verify compatibility with your specific propeller governor model and applicable maintenance documentation before placing an order.
The Tempest AG3989-020 Flyweight Pin is designed for use in aircraft equipped with McCauley model DCFUS290D4 propeller governors. Matching replacement parts to the correct governor model is essential to ensure proper fit, function, and reliable operation.
The Tempest AGA-20291 Flyweight Pin serves as the pivot axis for the flyweights, allowing controlled movement in response to RPM changes and enabling precise governor regulation. Maintaining secure flyweight motion under centrifugal forces helps ensure accurate RPM sensing and consistent propeller speed control.
PJi offers the Tempest AGA-20291 as an FAA-PMA-approved replacement for the McCauley A-20291 flyweight pin. 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.
