# STC SA7811SW-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-467, with optional autotrim system.
- Applied: February 19, 1992
- Status date: July 24, 1996
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A20SO](https://openairdocs.org/tcds/A20SO)
- Certificate PDF: https://openairdocs.org/files/sha256/35/33/3533b18203656ba4579686229776fd7a7d5b3dcf9e295bdb1f10b54ca3bec5f1
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/ACA793F9F220C96A85256CC20056A4BC.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA7811SW-D

## ADs that name it (0)

None.

## Approved models (3)

- The New Piper Aircraft Inc. PA-31 ([TCDS A20SO](https://openairdocs.org/tcds/A20SO))
- The New Piper Aircraft Inc. PA-31-300 ([TCDS A20SO](https://openairdocs.org/tcds/A20SO))
- The New Piper Aircraft Inc. PA-31-325 ([TCDS A20SO](https://openairdocs.org/tcds/A20SO))

## 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.

*»«&4*n* Btparrramt of transportanon—jftdrral aoiation administration topplemcntal *Cgpc Certificate SA7811SW-D S-TEC Corporation 946 Pegram Mineral Wells, Texas 76067 ^^& ^ 3 ^^e, Civil Air . A20SO : Piper . PA-31, PA-31-300, and PA-31-325 Installation of S-TEC System 60 Two Axis Automatic Flight Guidance System, Model ST-467, with Optional Autotrim System, according to Bulletin No. 567, Revision 3, dated 7-05-96 and Master Drawing List No. 92556, Revision C, dated 7-05-96 with Optional Flight Director/Steering Horizon or later FAA Approved revisions of the above data (28 Volt System).

1. Also eligible on Models PA-31 and PA-31-300 When Modified Per STC SA970SO (350 H.P. Colemill Conversion).

2. Also eligible on Model PA-31-325 When Modified Per STC SA00048SE (Vortex Generator System).

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

f 2-19-92 3-09-92 10-18-95, 7-24-96Revision 2 Wilrfam J. Thomas DAS Staff Coordinator. DAS 5 SW(T,tl*> Any alteration ofthit certificate u punishable by a fine of not exceeding 11,000, or imprisonment not exctedtng 3ytars, or both.

Tkit firtificate may te IrantfernJ in accardana ivi'M FAR 2J.17.

rAA taM (110.] (tO-«l)

ttnitrd gtatat of amtrica Btpartment of Itonsportation— federal Nation administration Supplemental ICgpe Certificate(Continuation £heet) SA7811SW-D, Revision 2 Limitations and Conditions (con't.)

3. FAA/DAS Approved Airplane Flight Manual Supplement, P/N 89962, dated 3-09-92 is required for Piper Models PA-31 and PA-31-300 And The Above Models When Modiifed Per STC SA970SO (350 H.P. Colemill Conversion) or later FAA Approved revisions of the above supplement.

4. FAA/DAS Approved Airplane Flight Manual Supplement, P/N 89962-1, dated 10-18-95 is required for Piper Models PA-31 and PA-31-300 And The Above Models When Modified Per STC SA970SO (350 H.P. Colemill Conversion) or later FAA Approved revisions of the above supplement.

5. FAA/DAS Approved Airplane Flight Manual Supplement, P/N 89962-2, dated 7-24-96 is required for Piper Models PA-31 and PA-31-300 And The Above Models When Modified Per STC SA970SO (350 H.P. Colemill Conversion) or later FAA Approved revisions of the above supplement.

6. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891286, dated 7-24-96 is required for Piper Model PA-31-325 And The Above Model When Modified Per STC SA00048SE (Vortex Generator System) or later FAA Approved revisions of the above supplement.

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

FAA FORM 8110-z-i (10-69) This ceTlifcatt may be transferred in accordance with FAR 21.47.

**PAGE 2 OF 2 PAGES C FAA AC 82 03578**

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number .

to (Name of transferee) (Address of transferee) (Number and street) (City, Stale, and ^1P code) from (Name of grantor) (Print or type).

(Address of grantor) r anil street) ( C.i<Y. Slate. and ^tP tode ) Extent of Authority (if licensing agreement):

Signature of grantor (In ink): __

## Every issue (1)

- July 24, 1996: Amended, Current. [certificate](https://openairdocs.org/files/sha256/35/33/3533b18203656ba4579686229776fd7a7d5b3dcf9e295bdb1f10b54ca3bec5f1)

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