# STC SA4403SW

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC system 60 two axis flight guidance system Model ST-034 with optional autotrim system
- Applied: May 8, 1981
- Status date: June 30, 1981
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A21](https://openairdocs.org/tcds/3A21)
- Certificate PDF: https://openairdocs.org/files/sha256/37/7b/377b8492adc9ca08cbbe2ff9c20cea95baea08c18b6bdb8d2e0e36d019e20d93
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/51B8D083B8AE606D85256CC2000E3C44.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4403SW

## ADs that name it (0)

None.

## Approved models (2)

- Cessna Aircraft Company 210K ([TCDS 3A21](https://openairdocs.org/tcds/3A21))
- Cessna Aircraft Company T210K ([TCDS 3A21](https://openairdocs.org/tcds/3A21))

## 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 ^Department of i:ransportation— Jpedcral Stoiation administration 3uppltmcntal l^pt Certificate SA4403SW Pr°Ject A5298SW-DS FKP-213 S-TEC Corporation Rt. 3, Bldg. 946 Wolters Industrial Complex Mineral Wells, Texas 76067 wJfa^yfi&d&ii^ /'»<*^<sw!^^ 3 ^J&v Civil Air

•Jl&SU6tti& 3A21 Cessna 210K, T210K Installation of S-TEC System 60 Two Axis Flight Guidance System, Model ST-"034 with Optional Autotrim System according to Bulletin No. 137, dated 2/20/81 and Master Drawing List No. 9236, dated 2/20/81 and Optional Flight Director/Steering Horizon according to Bulletin No. 120, Revision 1, dated 1/7/81 and Master Drawing List No. 9209, Revision A, dated 1/7/81, or later FAA approved revision. (14 Volt System)

1. Supplemental Flight Manual FAA Approved P/N 8941 dated June 30, 1981, is required.

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

c^y£<^*^<<^i<c<£<^^?z<z£<i{«^<i<j/yi<?w^ ~*Wst«i<^nj/n-a&<>n/,cia^s^Jt>£n^mviJte^f<lda&&A^^ <QzdmtntAdra& May 8, 1981 June 30, 1981 '/ Mldrj&eTtftiftvi&r' , (Signature^ ^-^MJon P. Watson /) Chief, Engineering and Manufacturing Branch

**FAA FOUM 8110-2 (10-68)**

## Every issue (1)

- June 30, 1981: Issued, Current. [certificate](https://openairdocs.org/files/sha256/37/7b/377b8492adc9ca08cbbe2ff9c20cea95baea08c18b6bdb8d2e0e36d019e20d93)

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