# STC SA7792SW-D

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 60 two axis automatic flight guidance system, model ST-332, with optional automatic electric trim system
- Applied: February 18, 1991
- Status date: March 31, 1992
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 1A10](https://openairdocs.org/tcds/1A10)
- Certificate PDF: https://openairdocs.org/files/sha256/00/fa/00fa91554571d87206b78101a23cb8fa68e555a29dfd7529d292893d0f7e7e46
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/44C0AEC329FACB5985256CC20056A497.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA7792SW-D

## ADs that name it (0)

None.

## Approved models (2)

- The New Piper Aircraft Inc. PA-23-235 ([TCDS 1A10](https://openairdocs.org/tcds/1A10))
- The New Piper Aircraft Inc. PA-23-250 ([TCDS 1A10](https://openairdocs.org/tcds/1A10))

## 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.

rf Stand Btparnnrat of transportation — jftdtral 2oiati0n 3WminiBtranon Supplemental Itupc Certificate i/uvmvev SA7792SW-D S-TEC Corporation 946 Pegram Wolters Industrial Park Mineral Wells, Texas 76067 Civil Air 1A10 Piper PA-23-235 and PA-23-250 Installation of S-TEC System 60 Two Axis Automatic Flight Guidance System, Model ST-332, with Optional Automatic Electric Trim System according to Bulletin No.

432, Revision 1, dated 3-24-92 and Master Drawing List No. 92539, Revision A, dated 3-24-92 with Optional Flight Director/Steering Horizon and/or later FAA Approved revisions of the above data (14 Volt System).

1. Only eligible on Model PA-23-250, S/N 27-1 through S/N 27-504.

2. FAA/DAS Approved Airplane Flight Manual Supplement, P/N 89916, dated 3-05-91 is required for Piper Model PA-23-235 and/or later FAA Approved revisions of the above supplement.

ee Continuation Sheet, Page 2, a part of this STC.)

iy^-^yijwai avux'*+ e*£a4£*AetJ4y^v SXt/mmtAjraZtyr^jAe 2-18-91 3L*,~*A~J:

3-05-91 9L&,~n~AJ: 3-31-92, Revision 1 William J. Thomas Staff rnnydinatnr HAS 5

This (trtifitalt may ir Iraiufrrrtd in tcmduut with FAR 21.17.

timed Stain of 3anva Bqjartmcnt of Transportation— federal Station Administration Supplemental t^pe Certificate(Continuation Siiect) SA7792SW-D, Revision 1 Limitations and Conditions (con't.)

3. FAA/DAS Approved Airplane Flight Manual Supplement, P/N 89916-1, dated 3-31-92 is required for Piper Models PA-23-235; and PA-23-250, S/N 27-1 Through S/N 27-504 and/or later FAA Approved reivsions of the above supplement.

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

.Im alteration af this certificate is punishable by ttfint of not exceeding 11,000, or imprisonment not exceeding 3 years, or hnth.

P»A FORM aiio.a-1 <IM«> Thit cettiftatt may l>i trmtferred in accordant! with FAR .'/.V* PAGE 2 OF

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number .

to (Name of transferee) (Address of transferee) (Number and street) fCily, State, and ^IP cade) from (Name oj grantor) (Print or type) (Address of grantor) limbrr and strrfl) ( ('ify. Slnle. and ^IP tode) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

## Every issue (1)

- March 31, 1992: Amended, Current. [certificate](https://openairdocs.org/files/sha256/00/fa/00fa91554571d87206b78101a23cb8fa68e555a29dfd7529d292893d0f7e7e46)

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