# STC SA5242SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC system 40/50, single and two axis automatic flight guidance systems Model ST-235-40/50
- Applied: November 9, 1983
- Status date: March 27, 1991
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A10EU](https://openairdocs.org/tcds/A10EU)
- Certificate PDF: https://openairdocs.org/files/sha256/31/b4/31b4772cec5bd0daed11c9177d6056573284dd9f52b47c19ff0c6267c7c30261
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/BC4854F8D993E2D385256CC2001227CC.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA5242SW-D

## ADs that name it (0)

None.

## Approved models (3)

- Aermacchi S.p.A. F.260B ([TCDS A10EU](https://openairdocs.org/tcds/A10EU))
- Aermacchi S.p.A. F.260C ([TCDS A10EU](https://openairdocs.org/tcds/A10EU))
- Aermacchi S.p.A. F.260D ([TCDS A10EU](https://openairdocs.org/tcds/A10EU))

## What the certificate says

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

Aried Sas & Ancia Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number 5A529254-0 This certificate issued to: S-TEC Corporation Rt. 4, Bldg. 946 Wolters Industrial Complex Mineral Wells, Texas 76067 Port 3 of the CiVIl Air Regulations Original Product -Typo Contificato Numbon: AIOEU Make: SIAI Marchetti Model: F. 260B, F. 260C, and F.260D Dissovilion of Type Design Changs:

Installation of S-TEC System 40/50, Single and Two Axis Automatic Flight Guidance Systems, Model ST-235-40/50, according to Bulletin No. 335, Revision 3, dated 3-21-91 and Master Drawing List No. 92261, Revision C, dated 3-21-91 and/or later FAA Approved revisions of the above data (28 Volt System).

1. Only eligible on Model F.260B When Equipped With Aileron Assemblies P/N SF260-02-05-01 (L.H.) and P/N SF260-02-05-02 (R.H.).

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

Thomas DAS Staff Coordinator, DAS 5 SW (Tille) 17 ran Foes 8110-2 (10-68)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA52425W-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 89371, dated 11-23-83 is required for S-TEC System 40 in SIAI Marchetti Model F.260C and/or later FAA Approved revisions of the above supplement.

3. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89372, dated 11-23-83 is required for S-TEC System 50 in SIAI Marchetti Model F.260C and/or later FAA Approved revisions of the above supplement.

FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89371-1, dated 12-17-86 is required for S-TEC System 40 in SIAI Marchetti Models F.260B When Equipped With Aileron Assemblies P/N SF260-02-05-01 (L.H.) and P/N SF260-02-05-02 (R.H.) and F.260C and/or later FAA Approved revisions of the above supplement.

FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89372-1, dated 12-17-86 is required for S-TEC System 50 in SIAI Marchetti Models F.260B When Equipped With Aileron Assemblies P/N SF260-02-05-01 (L.H.) and P/N SF260-02-05-02 (R.H.) and F.260C and/or later FAA Approved revisions of the above supplement.

FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89371-2, dated 3-27-91 is required for S-TEC System 40 in SIAI Marchetti S.p.A. Models F.260B When Equipped With Aileron Assemblies P/N SF260-02-05-01 (L.H.) and P/N SF260-02-05-02 (R.H.), F.260C, and F.260D and/or later FAA Approved revisions of the above supplement.

FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89372-2, dated 3-27-91 is required for S-TEC System 50 in SIAI Marchetti S.p.A. Models F.260B when Equipped With Alleron Assemblies P/N SF260-02-05-01 (L.H.) and P/N SF260-02-05-02 (R.H.), F.260C, and F.260D and/or later FAA Approved revisions of the above supplement.

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

FAA FORM 811062-1 (10668) This certificate may be transferred in accordance with lilt "1.t7.

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)

- March 27, 1991: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/31/b4/31b4772cec5bd0daed11c9177d6056573284dd9f52b47c19ff0c6267c7c30261)

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