# STC SA5399SW-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC system 60 two axis automatic flight guidance system, Model ST-343, with optional automatic electric trim system.
- Applied: January 7, 1986
- Status date: January 20, 1986
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A4CE](https://openairdocs.org/tcds/A4CE)
- Certificate PDF: https://openairdocs.org/files/sha256/5c/0b/5c0b2a230b274a041f41217f5e2503a362ca360f46badec33753375551f60cb4
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/347250DDBAC30A0B85256CC2001228DF.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA5399SW-D

## ADs that name it (0)

None.

## Approved models (14)

- Textron Aviation Inc. P206C ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Textron Aviation Inc. P206D ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Textron Aviation Inc. P206E ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Textron Aviation Inc. TP206C ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Textron Aviation Inc. TP206D ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Textron Aviation Inc. TP206E ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Textron Aviation Inc. TU206C ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Textron Aviation Inc. TU206D ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Textron Aviation Inc. TU206E ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Textron Aviation Inc. TU206F ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Textron Aviation Inc. U206C ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Textron Aviation Inc. U206D ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Textron Aviation Inc. U206E ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Textron Aviation Inc. U206F ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))

## What the certificate says

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

Manited Scarce of Slarice Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA53995W-D This certificate issued to: . S-TEC Corporation Route 4, Bldg 946 Wolters Industrial Complex Mineral Wells, TX 76067 Part 3 of the CiVIT Air ReG.

•Keyulations Original Product - Type tientificale Numben: AACE Make: Cessna Model: P22060, P206E, 12206Ł, U206L, fU206Ł, U206F TU206C, P206D, . TP206D, U206D, Description of Type Design Change:

Installation of S-TEC System 60 Two Axis Automatic Flight Guidance System, Model SI-343, with Optional Automatic Electric Trim System according to Bulletin No. 443, dated 1-2-86, and Master Drawing List No. 92359, dated 1-02-86 with Optional Flight Director Steering Horizon and/or FAA Approved Revisions of the above data (28 Volt System).

1. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual P/N 89648, dated I-20-86, for Cessna Models P206С, TP206С, 0206C, • 020, 020, 9206, 1206. 1 TU206C, P206D, TP206D, U206D, TU206D, P206E, TP206E, U206E, TU206E, U206F and TU206F.

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

Date of Application: 1-7-86 Date Reissued:

Date of Issuance: 1-20-86 Date Amended:

FEDERAL VIATION By Direction of the Administrator Narated 7. 7atolion (Signature ) OMINISTA DAS Staff Coordinator DAS 5 SW Harold W. Holdeman (Title) 47 FAX FO84 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):

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

U.S. GOVERNMENT PRINTING OFFICE: 1966 OF-205-579

## Every issue (1)

- January 20, 1986: Issued, Current. [certificate](https://openairdocs.org/files/sha256/5c/0b/5c0b2a230b274a041f41217f5e2503a362ca360f46badec33753375551f60cb4)

---
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.