# STC SA839SO

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Metropolitan Propeller Repair, Inc, United States
- Description: Installation of Hamilton Standard Model 12D40/6101A-10S propeller approved under STC SP830SO on Pratt & Whitney R1340-AN-1 on S3H1 engines.
- Status date: May 13, 1975
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A6PC](https://openairdocs.org/tcds/A6PC)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C105B289B20C817A85256CC20058E785.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA839SO

## ADs that name it (0)

None.

## Approved models (1)

- EMROTH Company The MA-1 ([TCDS A6PC](https://openairdocs.org/tcds/A6PC))

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