McCauley A-1636-21, Damped Flyweight Head Retaining Ring - Tempest PMA
Tempest AGA-1636-21-PMA
The Tempest AGA-1636-21 (McCauley OEM A-1636-21) is an FAA-PMA replacement damped flyweight head retaining ring for McCauley applications.
- Helps keep flyweight head components properly retained, reducing the risk of internal movement that can create wear, debris, or unstable RPM control.
- Supports smooth governor response by maintaining correct axial location of retained parts in the flyweight head assembly.
- Direct replacement cross reference: Tempest AGA-1636-21 replaces OEM A-1636-21 for McCauley governor service.
Retaining rings are small, high impact parts in aviation governors because loss of retention can affect response and reliability.
Installation notes
These notes are general guidance only; always refer to the approved maintenance and overhaul manual for complete installation procedures.
- Use proper retaining ring tools and avoid over-expanding the ring during installation.
- Confirm full seating in the groove and inspect the groove for wear or damage before reassembly.
Applications and fitment
Used on McCauley governors where OEM A-1636-21 is specified. Confirm eligibility by matching the OEM part number and reviewing governor model and serial number applicability in approved maintenance data.
Tempest AGA-1636-21 is the direct replacement for OEM A-1636-21. 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 # | AGA-1636-21 |
| Manufacturer | Tempest |
| Shipping Information | |
|---|---|
| Product Weight | 0.01 lbs. |
| Product Dimensions | 1.3 x 1.3 x 0.1 in. |
| Schedule B | 8807300010 |
| ECCN | 9A991.d |
| Specifications | |
|---|---|
| Approval | FAA-PMA replacement part |
| OEM P/N | A-1636-21 |
| System | McCauley propeller governor, flyweight head retention |
| Tempest P/N | AGA-1636-21 |
| Type | Retaining ring, damped flyweight head |
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AIRCRAFT COMPATIBILITY
| Compatible Aircraft* | |
|---|---|
| Cessna | 310 |
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QUESTIONS & ANSWERS
Tempest AGA-1636-21 is a direct FAA-PMA replacement for McCauley P/N A-1636-21. Always verify compatibility with your specific propeller governor model and applicable maintenance documentation before placing an order.
The Tempest AGA-1636-21 Damped Flyweight Head Retaining Ring is designed for use in aircraft equipped with McCauley model DCFU290D1 propeller governors. Matching replacement parts to the correct governor model is essential to ensure proper fit, function, and reliable operation.
The Tempest AGA-1636-21 Damped Flyweight Head Retaining Ring secures the flyweight head while reducing vibration. Stable flyweight retention improves RPM sensing accuracy.
PJi offers the Tempest AGA-1636-21 as an FAA-PMA-approved replacement for the McCauley A-1636-21 damped flyweight head retaining ring. 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.
