# STC SA591NW

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Collins Aviation Inc, United States
- Description: Installation of Beech P35 upper cabin and aft fuselage, P35 front and rear seats, M35 wing tips, V35 long windshield with glare shield
- Applied: April 13, 1978
- Status date: August 8, 1978
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 3A15](https://openairdocs.org/tcds/3A15)
- Certificate PDF: https://openairdocs.org/files/sha256/9f/6f/9f6f1f0c1f1e8c7114f9a672c03c02f1eb5aa1dfee1204b3f012a7ffe890abdb
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E8223C3B1B02D5D986257A46004E8C15.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA591NW

## ADs that name it (0)

None.

## Approved models (1)

- Hawker Beechcraft Corporation K35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))

## What the certificate says

The certificate is a scan without a text layer; open the PDF to read it.

## Every issue (1)

- August 8, 1978: Issued, Current. [certificate](https://openairdocs.org/files/sha256/9f/6f/9f6f1f0c1f1e8c7114f9a672c03c02f1eb5aa1dfee1204b3f012a7ffe890abdb)

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