# STC SA7155SW-D

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 65 two axis automatic flight guidance system, Model ST-420.
- Applied: July 15, 1987
- Status date: April 9, 1996
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A12SO](https://openairdocs.org/tcds/A12SO)
- Certificate PDF: https://openairdocs.org/files/sha256/9b/0a/9b0a9dff6826fa813a1f75d5dfcb107d7b06aea2d06f43988025bfdc5fb6385a
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FA943B40DDFC511485256CC20056A1BB.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA7155SW-D

## ADs that name it (0)

None.

## Approved models (6)

- Commander Aircraft Corporation 112 ([TCDS A12SO](https://openairdocs.org/tcds/A12SO))
- Commander Aircraft Corporation 112B ([TCDS A12SO](https://openairdocs.org/tcds/A12SO))
- Commander Aircraft Corporation 112TC ([TCDS A12SO](https://openairdocs.org/tcds/A12SO))
- Commander Aircraft Corporation 112TCA ([TCDS A12SO](https://openairdocs.org/tcds/A12SO))
- Commander Aircraft Corporation 114 ([TCDS A12SO](https://openairdocs.org/tcds/A12SO))
- Commander Aircraft Corporation 114A ([TCDS A12SO](https://openairdocs.org/tcds/A12SO))

## 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.

Bqiartmnit of transportation—jfctoal atriation administration Supplemental "Cgpe Certificate isUtymvev SA7155SW-D S-TEC Corporation 946 Pegram Mineral Wells, TX 76067 ^ 23 j&, Federal Aviation

- " A12SO : Commander Aircraft .- 112, 112B, 112TC, 112TCA, 114, and 114A Installation of S-TEC System 65 Two Axis Automatic Flight Guidance System, Model ST-420, according to Bulletin No. 520, Revision 3, dated 4-03-96 and Master Drawing List No. 92451, Revision C, dated 4-03-96 with Optional Flight Director/ Steering Horizon or later FAA Approved revisions of the above data (14 Volt System).

1. Only eligible on Model 112, S/N 126 & Above.

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

7-15-87 7-22-87 £ : 12-13-91, 4-09-96, Revision 2 nfnalurt) WiltTam J. Thomas DAS Staff Coordinator, DAS 5 SW (Title)

17.

Uirittd £cuts of 3jBtnra Btpartmrac of Transportation— jfdcral atriation Administration Supplemental t:gpe Certificate (Continuation .Sheet) SA7155SW-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 89752, dated 7-22-87 is required for Gulfstream American (Rockwell Commander) Models 112, 112B, 114, and 114A 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 89752-1, dated 12-13-91 is required for Gulfstream American (Rockwell Commander) Models 112, S/N 126 & Above; 112B, 112TC, 114, and 114A or later FAA Approved revisions of the above supplement.

4. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 89752-2, dated 4-09-96 is required for Commander Aircraft Models 112, S/N 126 & Above; 112B, 112TC, 112TCA, 114, and 114A or later FAA Approved revisions of the above supplement.

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

.l»i Mention of this certificate is punishable by afint of not exceeding SI,000, or imprisonment not exceeding 3 years, nr h«ih.

PAA FORM aiio-2-i UO.«9) THu etrtiJitaU may at trmsfirrtd ,n accordanci with I'.Ml .V.V" PAGE 2 OF 2 PAGES

INSTRUCTIONS : The transfer endorsement below may be used to notify the appropriate FAA Regional Office of the transfer of this Supplemental Type Certificate.

The FAA will reissue the certificate In the name of the transferre and forward it to him.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (%{amt of transferee) (Address of transferee) ami street) (City, State, amfZlT cade) {rom(%(ame of grantor) (Trint or type) _ __ ___ _ (Address of grantor) __ C^umBer and street) (City, State, andZlf cade) Exent of Authority (if licensing agreement) :

Signature of grantor (In Page 2 of 2

## Every issue (1)

- April 9, 1996: Amended, Current. [certificate](https://openairdocs.org/files/sha256/9b/0a/9b0a9dff6826fa813a1f75d5dfcb107d7b06aea2d06f43988025bfdc5fb6385a)

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