# STC SA5304SW-D

- 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-245, with optional automatic electric trim system.
- Applied: March 13, 1984
- Status date: October 22, 1990
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A13CE](https://openairdocs.org/tcds/A13CE)
- Certificate PDF: https://openairdocs.org/files/sha256/eb/c4/ebc4f9ec0ce223421423dd65affa158113fc16ab3f9ed4d2bde72f0fb151734e
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/65C7D04C2CD4D29685256CC200122835.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA5304SW-D

## ADs that name it (0)

None.

## Approved models (1)

- Textron Aviation Inc. 177B ([TCDS A13CE](https://openairdocs.org/tcds/A13CE))

## 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.

fbitd SSata Btparrmmt of transportation —jfttoal atriation administration Supplemental 'Cgpc Certificate SA5304SW-D S-TEC Corporation Rt. 4, Bldg. 946 Wolters Industrial Complex Mineral Wells, TX 76067 vJn*Jyfi». <™*y nrfof-Jno^eUot***^^ fft/ti t/-M>i£n jA+Jilrntea/tonA: m<n<* tfndt&imA> ^su^v^kn^svfv+^ne^y&Lt 23 ^j^, Federal Aviation A13CE CESSNA 177B Installation of S-TEC System 60 Two Axis Automatic Flight Guidance System, Model ST-245, with Optional Automatic Electric Trim System according to Bulletin No. 345, Revision 2, dated 10-QS-90 and Master Drawing List No. 92273, Revision B, dated 10-08-90 with Optional Flight Director Steering Horizon and/or later 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 89441, dated 4-11-84 is required for Cessna Model 177B and/or later FAA Approved revisions of the above supplement.

(See Continuation Sheet, Page 2, a part of this STC.)

^2ft^n^i£u^ JlXt/m£n 3-13-84 <2L&.+***»*S: 7-18-84, 10-22-90, Revision 2 4-11-84 3L& — * (Signaltat) Harold W. Holdeman DAS Staff Coordinator, DAS 5 SW (Title)

nil terti/leatt may It trantftmj in acnrdana with FAR 21.47.

fAA taut II10-1 (IO-«»)

Unitrd Starts of 3wnra Btpartmcnt of Transportation—.federal a&iation administration 3upplemtntal t^pe Certificate(Continuation £heet) tSVMm&eW SA5304SW-D, Revision 2 Limitations and Conditions (con't.)

2. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89441-1, dated 10-22-90 is required for Cessna Model 177B and/or later FAA Approved revisions of the above supplement.

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

alteration of this certificate is punishable by a fine of not exceeding Si,OOP, or imprisonment not exceeding 3 years, or both.

FORM 8110-2-1 (to-6t) Thit ttrltfcott may bi trantjirrid in actordanti wilfi I'AH ;'/.V* PAGE 2 OF 2 PAGES

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street) (City, State, and <//> code) from (Name of grantor) (Print or type) (Address of grantor) (Number and street) (City, Slate, and <7P code) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):.

US. GOVERNMENT PRINTING OFFICE : 1966 OF —205-579

## Every issue (1)

- October 22, 1990: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/eb/c4/ebc4f9ec0ce223421423dd65affa158113fc16ab3f9ed4d2bde72f0fb151734e)

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