# STC SA4045WE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Thrush Aircraft Inc., United States
- Description: Installation of second pilot s seat and dual controls in accordance with Serv-Aero Engineering, Inc. FAA sealed Master Drawing List MDL 9179, dated September 1, 1979, or later FAA approved revision.  Pezetel PZL-3S engine is required with this installation.
FAA Approved Serv-Aero Airplane Flight Manual No. 100979 dated October 29, 1979 is required with this installation.  (S2R S/N 2526R and up modified by STC SA3897WE) (S2R-R3S S/N R3S-001 AND UP NORMAL CATEGORY)
- Applied: November 9, 1978
- Status date: July 30, 2003
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A3SW](https://openairdocs.org/tcds/A3SW)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0C46F04C8864F26986256DAA00699AAE.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4045WE

## ADs that name it (0)

None.

## Approved models (2)

- Ayres Corporation S-2R ([TCDS A3SW](https://openairdocs.org/tcds/A3SW))
- Ayres Corporation S2R-R3S ([TCDS A3SW](https://openairdocs.org/tcds/A3SW))

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