# STC SA5364SW-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 60 pitch stabilization system, Model ST-266, with optional automatic electric trim system.
- Applied: October 30, 1984
- Status date: December 20, 1984
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 1A10](https://openairdocs.org/tcds/1A10)
- Certificate PDF: https://openairdocs.org/files/sha256/2a/1b/2a1b3c5aad102c2d2ac518feffb32687386d38e648c8622aa237d22ac8598708
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E82F9E134028D37085256CC2001228A6.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA5364SW-D

## ADs that name it (0)

None.

## Approved models (2)

- Piper Aircraft Inc. PA-23-250 ([TCDS 1A10](https://openairdocs.org/tcds/1A10))
- Piper Aircraft Inc. PA-E23-250 ([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: SA53645W-D This certificate issued to: 1« S-TEC Corporation Rt. 4, Bldg. 946 Wolters Industrial Complex Mineral Wells, TX 76067 Part 3 of the CiVIl Air Hegulations.

Original Product - Type Bertificate Numben: 1A10 Make: PIPER Model: PA-23-250 AND PA=E23-250 Description of Type Design Change:

Installation of S-TEC System 60 Pitch Stabilization System, Model ST-266, with Optional Automatic Electric Trim System, according to Bulletin No. 366, dated 10-22-84 and Master Drawing List No. 92300, dated 10-22-84 and/or later FAA Approved revisions of the above data (28 Volt System).

1. Eligible only on Piper Models PA-23-250 and PA-E23-250, S/N 27-2000 through S/N 27-7554172.

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

Date of Application: 10-30-84 Date Reissued:

Date of Issuance: . 12-20-84 Date Amended:

FEDERA AVIATION By Direction of the Administrator Had 1. 2flore (Signature) OMNISTRATIOR DAS Staff Coordinator, DAS 5 SW Harold W. Holdeman (Title)

47.

**PAA FORN 8110-2 (10-68)**

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA53645W-D Limitations and Conditions: (con't)

2. Also eligible on the above listed Models when equipped with Approved Turbocharged Engines (250 H.P.) and/or Wing Tip Tanks per STC SA1480WE.

3. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89544, dated 12-20-84 is required and/or later FAA Approved revisions of the above supplement.

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

L. dashun of this certificate is punishable by a fine of not exceeding $1,000, or imprisonment not exceeding 3 years, or hopk FAR FORM 8110-2-1 (10-69) This certificate may be transferred in accordance with FAR 21 1.

**PAGE 20F 2 PAGES**

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number - to (Name of transferee) (Address of transferee) (Number and street) (City, State, and ZIP code) from (Name of grantor) (Print or type) - (Address of grantor) (Number and street ) (City, State, and ZIP code ) Extent of Authority (if licensing agreement):

Date of Transfer: _ Signature of grantor (In ink):.

U.S. GOVERNMENT PRINTING OFFICE : 1966 OF-205-575

## Every issue (1)

- December 20, 1984: Issued, Current. [certificate](https://openairdocs.org/files/sha256/2a/1b/2a1b3c5aad102c2d2ac518feffb32687386d38e648c8622aa237d22ac8598708)

---
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.