# STC SA354SO

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Crouch Vernon L, United States
- Description: Aft cabin door removed.
- Status date: January 1, 1960
- 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/0D8D0D0AFC26799586256CE20076E1DD.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA354SO

## 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))

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