# STC SA7803SW-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC manual electric trim system, model ST-430.
- Applied: July 29, 1991
- Status date: August 9, 1991
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A25](https://openairdocs.org/tcds/3A25)
- Certificate PDF: https://openairdocs.org/files/sha256/70/00/700015aaaa335b89467cdb7520f1537d4bebc03f3279394da2e6fe28bb49b56f
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0F6FE8B54C554FC385256CC20056A4AE.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA7803SW-D

## ADs that name it (0)

None.

## Approved models (5)

- The Cessna Aircraft Company 320B ([TCDS 3A25](https://openairdocs.org/tcds/3A25))
- The Cessna Aircraft Company 320C ([TCDS 3A25](https://openairdocs.org/tcds/3A25))
- The Cessna Aircraft Company 320D ([TCDS 3A25](https://openairdocs.org/tcds/3A25))
- The Cessna Aircraft Company 320E ([TCDS 3A25](https://openairdocs.org/tcds/3A25))
- The Cessna Aircraft Company 320F ([TCDS 3A25](https://openairdocs.org/tcds/3A25))

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

Bqjartment of transportation—jfotaal aoiation administration Supplemental Itgpe Certificate tsuwrwev SA7803SW-D S-TEC Corporation Rt. 4, Bldg. 946 Wolters Industrial Complex Mineral Wells, Texas 76067

•• yirryftr/^nrrrn mrrft &(• «.r.(rr.flV...m rryn.rwnii.ua t/^mtf 3 Civil Al> 3A25 Cessna 320B, 320C, 3200, 320E, and 320F Installation of S-TEC Manual Electric Trim System, Model ST-430, according to Bulletin No. 530, Revision 1, dated 7-26-91 and Master Drawing List No. 92468, Revision A, dated 7-26-91 and/or later FAA Approved revisions of the above data (28 Volt System).

1. FAA Approved Supplemental Flight Manual, P/N 89934, dated 8-09-91 is required for Cessna Models 320B, 320C, 320D, 320E, and 320F and/or later FAA Approved revisions of the above supplement.

2. Compatibility of this modification with other previously approved modifications must be determined by the installer.

'A rcrtfieaft artt/ fAt ttyty rr/f'na (/afa trdi'rd fit jtitt dnAtt^r fy^rf\\i/A/a// ^ eA 7-29-91 8-09-91 William J. Thomas DAS Staff Coordinator, DAS 5 SH ___ (Title) fine of not exceeding tl ,000, or imprisonment not exceeding 3 yean, or both.

THu (trtifeatt may bt ttontftmd in ttnrdtna until FAR 21.17.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) ( Number and street) (City, Stale, and %IP cade) from (Name of grantor) (Print or type) (Address of grantor) {.tylinlker and street) ( Cilr. Slate, and ^IP code I Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

## Every issue (1)

- August 9, 1991: Issued, Current. [certificate](https://openairdocs.org/files/sha256/70/00/700015aaaa335b89467cdb7520f1537d4bebc03f3279394da2e6fe28bb49b56f)

---
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.