McCauley B-20122, Spring Seat Fitting - Tempest PMA
Tempest AGB-20122-PMA
The Tempest AGB-20122 (McCauley OEM B-20122) is an FAA-PMA replacement spring seat fitting for McCauley applications.
- Supports consistent spring loading by providing the correct seat geometry so the spring stack stays centered and aligned during operation.
- Helps reduce wear and uneven spring contact that can contribute to unstable governing or accelerated component fretting over time.
- Common overhaul replacement when inspection shows galling, deformation, corrosion, or contact surface damage at the spring seat interface.
This spring seat fitting is intended for aviation use in McCauley governor maintenance, overhaul, and line replacement where OEM part numbers are the primary way technicians cross reference parts accurately.
Installation notes
Refer to the applicable governor and engine maintenance manual for full installation procedures, torque values, and inspection requirements.
- Inspect the spring, shims, and mating seat surfaces for matched wear and replace components as required by approved overhaul data.
- Maintain strict cleanliness during assembly to prevent contamination from affecting spring movement or pressure stability.
Applications and fitment
Used on McCauley governor assemblies where OEM B-20122 is specified. Confirm compatibility by matching the OEM part number and reviewing governor model and serial number applicability in approved maintenance data.
Tempest AGB-20122 is the direct replacement for OEM B-20122. 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-20122 |
| Manufacturer | Tempest |
| Shipping Information | |
|---|---|
| Product Weight | 0.02 lbs. |
| Product Dimensions | 1 x 1 x 0.2 in. |
| Schedule B | 8807300010 |
| ECCN | 9A991.d |
| Specifications | |
|---|---|
| Approval | FAA-PMA replacement part |
| OEM P/N | B-20122 |
| System | McCauley propeller governor, spring stack support |
| Tempest P/N | AGB-20122 |
| Type | Spring seat fitting |
Customers also viewed
AIRCRAFT COMPATIBILITY
| Compatible Aircraft* | |
|---|---|
| Cessna | 310 , 421C |
PRODUCT REVIEWS
This item does not have any reviews yet.
QUESTIONS & ANSWERS
Tempest AGB-20122 is a direct FAA-PMA replacement for McCauley P/N B-20122. Always verify compatibility with your specific propeller governor model and applicable maintenance documentation before placing an order.
The Tempest AGB-20122 Spring Seat Fitting is designed for use in aircraft equipped with McCauley model DCFUS290D2 propeller governors. Matching replacement parts to the correct governor model is essential to ensure proper fit, function, and reliable operation.
The Tempest AGB-20122 Spring Seat Fitting supports proper positioning of internal springs. Correct seating ensures predictable force application and consistent governor behavior.
PJi offers the Tempest AGB-20122 as an FAA-PMA-approved replacement for the McCauley B-20122 spring seat fitting. 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.
