McCauley B-20576, Control Shaft Seat - Tempest PMA
Tempest AGB-20576-PMA
The Tempest AGB-20576 (McCauley OEM B-20576) is an FAA-PMA replacement control shaft seat for McCauley applications.
- Supports consistent control response by maintaining the intended seating surface where the control shaft interface must remain stable and aligned.
- Helps reduce leakage and wear at the control shaft interface when an aged seat shows scoring, fretting, or corrosion.
- Common overhaul replacement because control shaft interface wear can show up as inconsistent response, leakage, or difficult adjustment.
Control shaft interface condition matters in aviation governor service because small leaks and wear can create response issues that look like broader governor problems.
Installation notes
Refer to the applicable governor and engine maintenance manual for full installation procedures, torque values, and inspection requirements.
- Inspect the control shaft, bushings, and any seals or O-rings for matched wear and replace as required by approved overhaul data.
- After assembly, perform the operational checks specified by the approved maintenance data to confirm smooth movement and leak control.
Applications and fitment
Used on McCauley governor assemblies where OEM B-20576 is specified. Confirm eligibility by matching the OEM part number and reviewing governor model and serial number applicability in approved maintenance data.
Tempest AGB-20576 is the direct replacement for OEM B-20576. Match the OEM part number and confirm applicability by governor model and serial number in the approved maintenance data.
Pilot John International stocks Tempest PMA propeller governor parts for propeller overhaul shops, MROs, FBOs, and A&P mechanics supporting aircraft maintenance and ground support operations.
| General Information | |
|---|---|
| Part # | AGB-20576 |
| Manufacturer | Tempest |
| Shipping Information | |
|---|---|
| Product Weight | 0.01 lbs. |
| Product Dimensions | 0.8 x 0.8 x 0.2 in. |
| Schedule B | 8807300010 |
| ECCN | 9A991.d |
| Specifications | |
|---|---|
| Approval | FAA-PMA replacement part |
| OEM P/N | B-20576 |
| System | McCauley propeller governor, control shaft interface |
| Tempest P/N | AGB-20576 |
| Type | Seat, control shaft |
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AIRCRAFT COMPATIBILITY
| Compatible Aircraft* | |
|---|---|
| Cessna | 210 |
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QUESTIONS & ANSWERS
Tempest AGB-20576 is a direct FAA-PMA replacement for McCauley P/N B-20576. Always verify compatibility with your specific propeller governor model and applicable maintenance documentation before placing an order.
The Tempest AGB-20576 Control Shaft Seat is designed for use in aircraft equipped with McCauley model C290D4 propeller governors. Matching replacement parts to the correct governor model is essential to ensure proper fit, function, and reliable operation.
The Tempest AGB-20576 Control Shaft Seat supports the correct positioning and alignment of the control shaft within the governor. Proper seating ensures accurate transmission of pilot RPM inputs and smooth control movement.
PJi offers the Tempest AGB-20576 as an FAA-PMA-approved replacement for the McCauley B-20576 control shaft seat. 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.
