# STC SA1722SO

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Winters Aircraft Engr Co, United States
- Description: Installation of a cabin interior.
- Status date: December 21, 1984
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A3EU](https://openairdocs.org/tcds/A3EU)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DC1D4F9ED1556A4485256CC10083CF67.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1722SO

## ADs that name it (0)

None.

## Approved models (1)

- Raytheon Aircraft Company HS.125 Series 600A ([TCDS A3EU](https://openairdocs.org/tcds/A3EU))

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