Woodward 182621, 3/8 ID X 1/16 Cross Section Unfeather Valve O-ring - Tempest PMA
Tempest AG182621-PMA
The Tempest AG182621 (Woodward OEM 182621) is an FAA-PMA overhaul 3/8 id x 1/16 cross section unfeather valve o-ring for Woodward applications.
- Helps maintain proper internal oil sealing for unfeathering and governing functions by restoring the correct O-ring size and compression.
- Supports troubleshooting and overhaul work by addressing a common wear seal that can contribute to sluggish response or oil seepage.
- Improves maintenance repeatability by matching an OEM-referenced seal size used in Woodward governor parts lists.
This O-ring is commonly replaced during governor overhaul, unfeathering system service, or reseal work when internal sealing condition is refreshed. PJi® supports aviation maintenance professionals with OEM-cross referenced governor seals used in constant speed propeller systems.
Installation notes
Always refer to the applicable aircraft and governor maintenance manual for complete installation procedures.
- Inspect the valve groove and sealing surfaces for burrs, scratches, or embedded debris that can cause leakage.
- Use the lubrication and assembly practices specified in the governor manual to avoid twisting or cutting the O-ring.
- After assembly, perform the required functional and leak checks per approved maintenance data.
Applications and fitment
Used in Woodward governor configurations where OEM 182621 is specified for the unfeathering valve seal. Confirm compatibility by matching the OEM part number and verifying the unfeather valve configuration for your governor model and dash number in approved documentation.
Tempest AG182621 is the direct replacement for OEM 182621. Confirm the unfeather valve seal callout and size by governor model and approved maintenance data before ordering.
Pilot John International carries Tempest PMA propeller governor parts for FBOs, propeller overhaul shops, and aviation technicians supporting aircraft maintenance and ground support work.
| General Information | |
|---|---|
| Part # | AG182621 |
| Manufacturer | Tempest |
| Shipping Information | |
|---|---|
| Product Weight | 0.01 lbs. |
| Product Dimensions | 0.3 x 0.3 x 0.1 in. |
| Schedule B | 8807300010 |
| ECCN | 9A991.d |
| Specifications | |
|---|---|
| Approval | FAA-PMA |
| Material | Oil-resistant elastomer (verify exact compound requirements in the approved governor documentation) |
| OEM P/N | 182621 |
| Size | 3/8 in ID x 1/16 in cross section |
| Tempest P/N | AG182621 |
| Type | O-ring seal for unfeathering valve application on Woodward propeller governors |
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AIRCRAFT COMPATIBILITY
| Compatible Aircraft* | |
|---|---|
| Hawker Beechcraft | 58 - Baron , 95-C55 - Baron , 95-C55A - Baron |
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QUESTIONS & ANSWERS
Tempest AG182621 is a direct FAA-PMA replacement for Woodward P/N 182621. Always verify compatibility with your specific propeller governor model and applicable maintenance documentation before placing an order.
The Tempest AG182621 Unfeathering Valve O-Ring is designed for use in aircraft equipped with [manufacturer] model A210800 propeller governors. Matching replacement parts to the correct governor model is essential to ensure proper fit, function, and reliable operation.
The Tempest AG182621 Unfeathering Valve O-Ring seals the unfeathering valve interface, maintaining oil pressure and preventing leakage during unfeathering operations. Reliable sealing of the unfeathering valve helps ensure proper propeller response and system performance when transitioning out of a feathered condition.
PJi offers the Tempest AG182621 as an FAA-PMA-approved replacement for the Woodward 182621 unfeathering valve O-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.
