# STC SA4589SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 60 two axis automatic flight guidance system model ST-086 with optional flight director/steering horizon.
- Applied: January 14, 1982
- Status date: April 16, 1982
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 2A13](https://openairdocs.org/tcds/2A13)
- Certificate PDF: https://openairdocs.org/files/sha256/71/07/71075e7b76ff3f4b7c79562e816329dfd2799085a089bc501773aa852f350622
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D1C2AB239FB496D986257E1F007138D3.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4589SW

## ADs that name it (0)

None.

## Approved models (4)

- Piper Aircraft Inc. PA-28-151 ([TCDS 2A13](https://openairdocs.org/tcds/2A13))
- Piper Aircraft Inc. PA-28-161 ([TCDS 2A13](https://openairdocs.org/tcds/2A13))
- Piper Aircraft Inc. PA-28-181 ([TCDS 2A13](https://openairdocs.org/tcds/2A13))
- Piper Aircraft Inc. PA-28-236 ([TCDS 2A13](https://openairdocs.org/tcds/2A13))

## 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.

United States of america Bepartment of ^transportation—federal 2Uiiation administration Supplemental t^pe Certificate tsleau/a&vnA/.

<yKu>mMW' SA4589SW Project A5722SW-DSFKP-190 S-TEC Corporation Rt. 4, Bldg. 946 Wolters Industrial Complex -'——• vJ?^^2&'«<»«^i!y^»<«z£<*^'«^^^^ 3 Civil Air : 2A13 : Piper : PA-28-151, PA-28-161, PA-28-181, PA-28-236 "•' Installation of S-TEC System 60 TVo Axis Automatic Flight Guidance System, Model ST-086 with Optional Autotritn System according to Bulletin No. 189, Revision 1, dated 3-15-82 and Master Drawing List No. 9286, Revision A, dated 3-15-82 with Optional Flight Director Steering Horizon;

or according to later FAA approved revision. (14 Volt System) See Continuation Sheet of this STC.

^c^ni^Uti^i^r'^^ejanuary 14 j 1932 January 25, 1982 April 16, 1982 Revision 1 Chief ..Aircraft. Certification DivisionSouthwest .Region (Title)

United £tatu of America Bepartment of tensportation— Jpcderal SDiation administration Supplemental 'Cuje Certificate(Continuation 3htct) SA4589SW Limitations and Conditions:

FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual P/N 89102 dated 1-25-82 is required for Piper Models PA-28-151, S/N 28-7615001 and Up, PA-28-161; and PA-28-181 with S-TEC System 60 Two Axis Automatic Flight Guidance System; OR FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual P/N 89102-1 dated 4-16-82 is required for Piper Models PA-28-151, S/N 28-7615001 and UP, PA-28-161, PA-28-181, and PA-28-236 with S-TEC System 60 Two Axis Automatic Flight Guidance System.

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

**FAA FORM 8MO-2-1 (10-69) PAGE 2OF 2**

## Every issue (1)

- April 16, 1982: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/71/07/71075e7b76ff3f4b7c79562e816329dfd2799085a089bc501773aa852f350622)

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