# STC SA7815SW-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-486, with optional automatic electric trim system.
- Applied: May 5, 1992
- Status date: December 15, 1999
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 1A10](https://openairdocs.org/tcds/1A10)
- Certificate PDF: https://openairdocs.org/files/sha256/3f/fa/3ffae9345de8ee648ba21e5948b48126044c9c23fa13d3eb501f141d5bf1fa48
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/79103EB51899302885256CC20056A4C0.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA7815SW-D

## ADs that name it (0)

None.

## Approved models (2)

- The New Piper Aircraft Inc. PA-23 ([TCDS 1A10](https://openairdocs.org/tcds/1A10))
- The New Piper Aircraft Inc. PA-23-160 ([TCDS 1A10](https://openairdocs.org/tcds/1A10))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA78155W-D This certificate issued to: S-TEC Corporation One S-TEC Way Mineral Wells Municipal Airport Mineral Wells, TX 76067-9236 Part 3 of the Civil Air Regulations.

Original Product Type Certificate Number: 1A10 Make: Piper Model: PA-23 and PA-23-160 Description of Type Design 6 hunge:

Installation of S-TEC System 60 Two Axis Automatic Flight Guidance System, Model ST-486, with Optional Autotrim System according to Bulletin No. 586, Revision 3, dated 12-10-99 and Master Drawing List No. 92561, Revision C, dated 12-10-99 with Optional Flight Director/Steering Horizon or later FAA Approved revisions of the above data (14 Volt System).

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

If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

Date of Application: 5-05-92 Date Reissued:

Date of Issuance: 5-15-92 Date Amended: 7-28-94, 12-15-99, Revision 2 By Direction of the Administrator FEDERAL AVIATION (Signature) TOMINISTRATO Michael Keiran DAS Staff Coordinator, DAS 5 SW (Title) fine of not exceeding $1,000, or imprisonment not exceeding 3 years, or both FAA Form 8110-2 (10-68

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA7815SW-D, Revision 2 Limitations and Conditions: (con't.)

Also eligible on Piper models PA-23 and PA-23-160 when modified per STC SA504WE (wing tip conversion) and/or STC SA824WE (dorsal fin conversion).

Also eligible on Piper models PA-23 and PA-23-160 when modified per STC SA461SW, STC SA636SW, STC SA671SW, and STC SA899SW (Geronimo Conversion).

FAA/DAS Approved Airplane Flight Manual Supplement, P/N 89968, dated 5-15-92 is required for Piper Model PA-23-160 When Modified Per STC SA461SW, STC SA636SW, STC SA671SW, and STC SA899SW (Geronimo Conversion) or later FAA Approved revisions of the above supplement.

FAA/DAS Approved Airplane Flight Manual Supplement, P/N 89968-1, dated 7-28-94 is required for Piper Models PA-23 and PA-23-160 When Modified Per STC SA461SW, STC SA636SW, STC SA671SW, and STC SA899SW (Geronimo Conversion) or later FAA Approved revisions of the above supplement.

FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 89968, Revision 2, dated 12-15-99 is required for 1. Piper models PA-23 and PA-23-160; 2. Piper models PA-23 and PA-23-160 when modified per STC SA504WE (wing tip conversion) and/or STC SA824WE (dorsal fin conversion); 3. Piper models PA-23 and PA-23-160 when modified per STC SA461SW, STC SA636SW, STC SA671SW, and STC SA899SW (Geronimo conversion) or later FAA Approved revisions of the above supplement.

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

FAA Form 8110-2-1 (10-69) Page 2 of i

The FAA will reissuc the certificate in the name of the transferee and forward it to him.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number _ to (Name of transferee) (Address of transferee) (Number and streel) (City, State, and ZIP code ) from (Name of grantor) (Print or type) (Address of grantor) (Nunher and streel) (Cil. State, and SIP code!

Signature of grantor (In ink):

## Every issue (1)

- December 15, 1999: Amended, Current. [certificate](https://openairdocs.org/files/sha256/3f/fa/3ffae9345de8ee648ba21e5948b48126044c9c23fa13d3eb501f141d5bf1fa48)

---
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.