# STC SA01905CH

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Larson AG, United States
- Description: Replacement of an existing Pratt and Whitney model 1340 S3H1 engine and Hamilton Standard Model 12D40 propeller with a Pratt and Whitney model 1340 S3H1-G engine and Hamilton Standard Model 3D40 Propeller.  Limited to installation on serial number 1541R ONLY.
- Applied: June 6, 2003
- Status date: November 28, 2003
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A4SW](https://openairdocs.org/tcds/A4SW)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/31027AA2C9A6559786256E3500775F55.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA01905CH

## ADs that name it (0)

None.

## Approved models (1)

- Thrush Aircraft Inc. S-2R ([TCDS A4SW](https://openairdocs.org/tcds/A4SW))

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