# STC SA5391SW-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC manual electric trim system, Model ST-321.
- Applied: May 17, 1985
- Status date: May 21, 1985
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A15](https://openairdocs.org/tcds/3A15)
- Certificate PDF: https://openairdocs.org/files/sha256/db/42/db429a31e238f1384b768c0420c401edba96b6259c74789c91cfc94cf97e6534
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9E0915502E8DA81D85256CC2001228D3.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA5391SW-D

## ADs that name it (0)

None.

## Approved models (6)

- Beechcraft Corporation H35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation J35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation K35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation M35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation N35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation P35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))

## What the certificate says

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

Amited Scares of Sumerica Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA539154-D This certificate issued to: 1e. S-TEC Corporation Rt. 4, Bldg. 946 Wolters Industrial Complex Mineral weils, IX /606/ Parl 3 of the CiVil Air Regulations Original Product - Type Certificate Numben: 3A15 Make: BEECH Model: H35, J35, K35, M35, N35 AND P35 Description of Type Design Change:

Installation of S-TEC Manual Electric Trim System, Model ST-321, according to Bulletin No. 421, dated 5-17-85 and Master Drawing List No. 92330, dated 5-17-85 and/or later FAA Approved revisions of the above data (14 Volt System).

1. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89605, dated 5-21-85 is required for Beech Models A39, 039, K35, M35, N35 and P35 and/or later FAA Approved revisions of the above supplement.

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

Date of Application: 5-17-85 Date Reissued:

Date of Issuance: 5-21-85 Date Amended:

FEDERAL AVIATIO By Direction of the Administrator (Signalure) PHINISTRATO DAS Staff Coordinator, DAS 5 SW Harold w, Holdeman (Title)

**FAR FORM 8110-2 (10-68)**

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):

Signature of grantor (In ink): - U.S. GOVERNMENT PRINTING OFFICE : 1966 OF-205-579

## Every issue (1)

- May 21, 1985: Issued, Current. [certificate](https://openairdocs.org/files/sha256/db/42/db429a31e238f1384b768c0420c401edba96b6259c74789c91cfc94cf97e6534)

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