# STC SA00434AT

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: JAARS Inc., United States
- Description: Installation of a tailwheel shimmy damper on a Helio Courier.
- Status date: March 11, 1994
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 1A8](https://openairdocs.org/tcds/1A8)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C794C55D36E2367C85256CC1007DC91E.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA00434AT

## ADs that name it (0)

None.

## Approved models (4)

- Alliance Aircraft Group LLC H-250 ([TCDS 1A8](https://openairdocs.org/tcds/1A8))
- Alliance Aircraft Group LLC H-295 (USAF U-10D) ([TCDS 1A8](https://openairdocs.org/tcds/1A8))
- Alliance Aircraft Group LLC H-391 (USAF YL-24) ([TCDS 1A8](https://openairdocs.org/tcds/1A8))
- Alliance Aircraft Group LLC H-395 (USAF L-28A or U-10B) ([TCDS 1A8](https://openairdocs.org/tcds/1A8))

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.