McCauley B-20846 / B-20888, Flyweight Pin - Tempest PMA
Tempest AGB-20888-PMA
The Tempest AGB-20888 (McCauley OEM B-20846 / B-20888) is an FAA-PMA replacement flyweight pin for McCauley applications.
- Supports accurate RPM sensing by maintaining proper flyweight articulation and alignment in the governor flyweight mechanism.
- Helps reduce hunting or sluggish response that can occur when worn pins create looseness, uneven motion, or abnormal friction.
- Common overhaul replacement when inspection finds wear steps, scoring, corrosion, or poor fit at the flyweight pin interfaces.
This flyweight pin is intended for aviation use in McCauley governor maintenance, overhaul, and line replacement where OEM part numbers drive accurate cross-referencing.
Installation notes
These notes are general guidance only; always refer to the approved maintenance and overhaul manual for complete installation procedures.
- 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 B-20846 and or B-20888 is specified. Confirm compatibility by matching the OEM part number and verifying governor model and serial number applicability in the approved maintenance data.
Tempest AGB-20888 is a direct replacement for OEM B-20846 and B-20888. 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 # | AGB-20888 |
| Manufacturer | Tempest |
| Shipping Information | |
|---|---|
| Product Weight | 0.02 lbs. |
| Product Dimensions | 1.5 x 0.1 x 0.1 in. |
| Schedule B | 8807300010 |
| ECCN | 9A991.d |
| Specifications | |
|---|---|
| Approval | FAA-PMA replacement part |
| OEM P/N | B-20846 / B-20888 |
| System | McCauley propeller governor, flyweight speed sensing mechanism |
| Tempest P/N | AGB-20888 |
| Type | Flyweight pin |
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AIRCRAFT COMPATIBILITY
| Compatible Aircraft* | |
|---|---|
| Cessna | 182 , 210 |
| Hawker Beechcraft | A24 , A24R - Sierra 200 , Musketeer |
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QUESTIONS & ANSWERS
Tempest AGB-20888 is a direct FAA-PMA replacement for McCauley part numbers B-20888 and B-20846. Always verify compatibility with your specific propeller governor model and applicable maintenance documentation before placing an order.
The Tempest AGB-20888 Flyweight Pin is designed for use in aircraft equipped with McCauley model C290D2 propeller governors. Matching replacement parts to the correct governor model is essential to ensure proper fit, function, and reliable operation.
The Tempest AGB-20888 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 AGB-20888 as an FAA-PMA-approved replacement for the McCauley B-20888 or B-20846 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.
