# STC SA7820SW-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of System 40/50 single and two axis automatic flight guidance systems, Model ST-494-40/50.
- Applied: June 23, 1992
- Status date: June 26, 1992
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A12SO](https://openairdocs.org/tcds/A12SO)
- Certificate PDF: https://openairdocs.org/files/sha256/67/b8/67b8d045a507f80f50f85ca0c0d0805a5347304640a4975a6a84d00e7168a39d
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E8012E57AB2DC6C585256CC20056A4CA.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA7820SW-D

## ADs that name it (0)

None.

## Approved models (1)

- Commander Aircraft Company 114B ([TCDS A12SO](https://openairdocs.org/tcds/A12SO))

## What the certificate says

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

Aid Sons • 9 dia Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number SA7820SW-D This certificate issued to: S-TEC Corporation 946 Pegram Wolters Industrial Park Mineral Wells, Texas 76067 Port 23 of the Federal Aviation Regulations Original Product -Typo Contificato Numbon: A1250 Make: Commander Aircraft Model: 114В Tissoviption of Typo Design Change:

Installation of S-TEC System 40/50 Single and Two Axis Automatic Flight Guidance Systems, Model ST-494-40/50, according to Bulletin No. 594, dated 6-22-92 and Master Drawing List No. 92567, dated 6-22-92 and/or later FAA Approved revisions of the above data (28 Volt System).

1. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 89979, dated 6-26-92 is required for S-TEC System 40 and/or later FAA Approved revisions of the above supplement.

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

Thomas DAS Staff Coordinator, DAS 5 SW (Title)

**PAR FOR 8110-2 (10-60)**

Animi Stus a Samira Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number SA7820SW-D Limitations and Conditions: (con't.)

2. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 89980, dated 6-26-92 is required for S-TEC System 50 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.

Ins sleration of this certifeats is punishable by a fine of not exceeding $1,000, or imprisonment not exceeding 3 years, or both.

FAA FORM 911062-1 (10-68) This certificate may be transferred in accordance with fill i1.17.

The FAA will reissuc the certificate in the name of the transferee and forward it to him.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number - to (Name of transferee) (Address of transferee) (Number and streel) (City, State, and ZIP code ) from (Name of grantor) (Print or type) (Address of grantor) ( Nunher and streel) (City. State, and RIP code ) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

## Every issue (1)

- June 26, 1992: Issued, Current. [certificate](https://openairdocs.org/files/sha256/67/b8/67b8d045a507f80f50f85ca0c0d0805a5347304640a4975a6a84d00e7168a39d)

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