# STC SA4112WE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Thrush Aircraft Inc., United States
- Description: Installation of second pilot s seat and dual controls or passenger/cargo compartment in accordance with Serv-Aero Engineering, Inc. FAA sealed Master Drawing List MDL 012880 "A", dated April 21, 1980, or later FAA approved revision. P&W R-1340-AN-1 engine is required with this installation.
FAA Approved Serv-Aero Airplane Flight Manual Nermission. Supplemental Type Certificate Addendum No. SA4112WE is a part of this STC.  (S2R s/n 2526R and up modified by STC SA3961WE)
- Applied: January 30, 1980
- Status date: July 30, 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/DD84B254FAFC0C2186256DAA006FBE44.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4112WE

## ADs that name it (0)

None.

## Approved models (1)

- Ayres Corporation S-2R ([TCDS A4SW](https://openairdocs.org/tcds/A4SW))

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