# STC SA3897WE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Thrush Aircraft Inc., United States
- Description: Installation of Pezetel Model PZL-3S engine and Dowty Rotel Model CR289/3-110-F/1 propeller in accordance with Serv-Aero Engineering, Inc. Installation Procedure No. 32679, dated March 26, 1979.  Parts manufactured in accordance with FAA sealed Serv-Aero Master Drawing List No. MDL-9500, dated March 26, 1979, or later FAA approved revision.  (S2R RESTRICTED CATEGORY)
- Applied: November 9, 1978
- 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/47F741662FBF58F786256DAA006562A1.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3897WE

## ADs that name it (3)

- [AD 81-13-05](https://openairdocs.org/ad/81-13-05): Leading Edge · Dowty Propellers CR 289/3-110-F/1 and CR 289/3-110-F/11. Effective Jul 28, 1981. Named in the applicability
- [AD 81-05-04](https://openairdocs.org/ad/81-05-04): Blade Tip Placard · Dowty Propellers CR 289/3-110-F/1 and CR 289/3-110-F/11 with STC SA2731SW or SA3897WE. Effective Apr 2, 1981. Named in the applicability
- [AD 81-07-09](https://openairdocs.org/ad/81-07-09): Shaft · Dowty Propellers CR 289/3-110-F/1 and CR 289/3-110-F/11 with STC SA2731SW or SA3897WE. Effective Apr 2, 1981. Named in the applicability

## Approved models (1)

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

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