# STC SA8388SW-D

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC manual electric trim system, Model ST-531.
- Applied: May 10, 1994
- Status date: November 13, 1995
- Product: Aircraft, Single-Engine
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS 2A13](https://openairdocs.org/tcds/2A13)
- Certificate PDF: https://openairdocs.org/files/sha256/c1/62/c1626faf40249e023ec2675be6cf9c2fe4cf5c641b2c8865bd0de5239c511040
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/EE06DADD94198AA985256CC20058E771.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA8388SW-D

## ADs that name it (0)

None.

## Approved models (4)

- 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-28-201T ([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.

Part 3 of the Civil Air Regulations.

Installation of S-TEC Manual Electric Trim System, Model ST-531, according to Master Drawing List No. 92680, Revision E, dated 11-04-08 or later FAA Approved revisions of th e above data (28 Volt System).

(See Continuation Sheet, Page 3, a part of this STC.)

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

S-TEC Corporation One S-TEC Way Mineral Wells Municipal Airport Mineral Wells, TX 76067-9236 2A13 Piper Make :

Model : PA-28-161, PA-18-181, PA-28-201T, and PA-28-236

Date of application : 5-10-94 Date of issuance : 5-16-94 Date reissued : 11-05-08 Date amended : 11-13-95,

(Signature)

James W. Smisek DAS administrator, DAS-100.2 (Title)

FAA Form 8110-2-1(10-69) Page 2 of 3

Number SA8388SW-D Amended 11-05-08

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)

Signature of grantor (In ink):

FAA Form 8110-2-1(10-69) Page 3 of 3

Number SA8388SW-D Amended 11-05-08

Limitations and Conditions (con’t.)

1. FAA/DAS Approved Airplane Flight Manual Supplement, P/N 891066, dated 5-16-94 is required for Piper Models PA-28-161, PA-28-181, PA- 28-201T, and PA-28-236 or later FAA Approved revisions of the above supplement.

2. Compatibility of this modification with ot her previously approved modifications must be determined by the installer.

## Every issue (1)

- November 13, 1995: Amended, Current. [certificate](https://openairdocs.org/files/sha256/c1/62/c1626faf40249e023ec2675be6cf9c2fe4cf5c641b2c8865bd0de5239c511040)

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