McCauley A-20158-2, Grooved Unfeathering Pin - Tempest PMA
Tempest AGA-20158-2-PMA
The Tempest AGA-20158-2 (McCauley OEM A-20158-2) is an FAA-PMA replacement grooved unfeathering pin for McCauley applications.
- Supports correct unfeather linkage geometry by providing the specified pin diameter, length, and groove features required for retention.
- Helps restore reliable unfeather function when inspection finds wear, scoring, corrosion, or looseness at pin joints.
- Often replaced during overhaul because pin wear can create play that translates into inconsistent unfeather response.
Unfeather linkage hardware is particularly important in aviation because reliable propeller control directly affects safe operation and maintenance dispatch.
Installation notes
These notes are general guidance only; always refer to the approved maintenance and overhaul manual for complete installation procedures.
- Inspect mating holes, bushings, and retaining features for wear. Replace matched components as required by the approved overhaul data.
- Confirm free movement after assembly and complete the required operational checks per approved maintenance data.
Applications and fitment
Used on McCauley governors where OEM A-20158-2 is specified. Confirm compatibility by matching the OEM part number and verifying governor model and serial number applicability in approved maintenance data.
Tempest AGA-20158-2 is the direct replacement for OEM A-20158-2. Match the OEM part number and confirm applicability by governor model and serial number in the approved maintenance data.
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 # | AGA-20158-2 |
| Manufacturer | Tempest |
| Shipping Information | |
|---|---|
| Product Weight | 0.01 lbs. |
| Product Dimensions | 0.2 x 0.1 x 0.1 in. |
| Schedule B | 8807300010 |
| ECCN | 9A991.d |
| Specifications | |
|---|---|
| Approval | FAA-PMA replacement part |
| OEM P/N | A-20158-2 |
| System | McCauley propeller governor, unfeathering mechanism |
| Tempest P/N | AGA-20158-2 |
| Type | Pin, grooved, unfeathering |
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AIRCRAFT COMPATIBILITY
| Compatible Aircraft* | |
|---|---|
| Cessna | 310 |
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QUESTIONS & ANSWERS
Tempest AGA-20158-2 is a direct FAA-PMA replacement for McCauley P/N A-20158-2. Always verify compatibility with your specific propeller governor model and applicable maintenance documentation before placing an order.
The Tempest AGA-20158-2 Grooved Unfeathering Pin is designed for use in aircraft equipped with McCauley model DCFUS290D4 propeller governors. Matching replacement parts to the correct governor model is essential to ensure proper fit, function, and reliable operation.
The Tempest AGA-20158-2 Grooved Unfeathering Pin provides controlled engagement within the unfeathering linkage mechanism. Accurate pin geometry ensures consistent mechanical action and reliable force transmission.
PJi offers the Tempest AGA-20158-2 as an FAA-PMA-approved replacement for the McCauley A-20158-2 grooved unfeathering 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.
