# STC SA594NW

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Sorm Inc, United States
- Description: Modify type design by installation of side cargo door
- Applied: March 3, 1978
- Status date: April 24, 1978
- Product: Propeller
- Certification basis: Part 21
- Data sheets: [TCDS TC 785](https://openairdocs.org/tcds/TC%20785)
- Certificate PDF: https://openairdocs.org/files/sha256/b2/ae/b2ae7c282d5d309af8180e3785f09de08fb4b0d92c2d3f87d7f0f6cb72f1f0a1
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C787CA7FB1952E2D86257A4400728C8E.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA594NW

## ADs that name it (0)

None.

## Approved models (1)

- Catalina Aircraft Trust LLC 28-5ACF ([TCDS TC 785](https://openairdocs.org/tcds/TC%20785))

## What the certificate says

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

## Every issue (1)

- April 24, 1978: Issued, Current. [certificate](https://openairdocs.org/files/sha256/b2/ae/b2ae7c282d5d309af8180e3785f09de08fb4b0d92c2d3f87d7f0f6cb72f1f0a1)

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