# STC SA09761DS

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of an S-TEC 01326 Digital Flight Control System (DFCS)
- Applied: March 17, 2020
- Status date: October 5, 2020
- Product: Aircraft, Small Airplane
- Certification basis: Part 21, Part 23
- Data sheets: [TCDS A9EA](https://openairdocs.org/tcds/A9EA)
- Certificate PDF: https://openairdocs.org/files/sha256/d0/e3/d0e3db960b03f67c61f38571b09168f34b4169960035109f5e6fdc657fa59d1e
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/694EAC9F6307149986258603003F6F43.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA09761DS

## ADs that name it (0)

None.

## Approved models (3)

- Viking Air Limited DHC-6-100 ([TCDS A9EA](https://openairdocs.org/tcds/A9EA))
- Viking Air Limited DHC-6-200 ([TCDS A9EA](https://openairdocs.org/tcds/A9EA))
- Viking Air Limited DHC-6-300 ([TCDS A9EA](https://openairdocs.org/tcds/A9EA))

## 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.

FAA Form 8110-2 (06/20) SUPERSEDES PREVIOUS EDITION Page 1 of ___

Part of .

SA09761DS S-TEC Corporation One S-TEC Way Mineral Wells, TX 76067-9236 23 Federal Aviation Regulations A9EA Viking Air Limited DHC-6-100, DHC-6-200, and DHC-6-300

1. Installation of an S-TEC 01326 Digital Flight Control System (DFCS), in accordance with Master Data List No.

ST-979-MDL-0001, Revision A, dated 10-01-20 or later FAA approved revision.

2. Airplane Flight Manual Supplement ST-979-AFMS-0001, Rev. -, dated 10-05-20, or later FAA approved revision is required.

3. Instructions for Continued Airworthiness, ST-979-ICA-0001, Rev. -, dated 9-23-20, or later FAA approved revision is required.

1. This STC is applicable to all serial numbers for Viking Air Limited models DHC-6-100, DHC-6-200, and DHC-6-300.

2. The installer must determine whether this design change is compatible with previously approved modifications.

(See continuation on page 3) 03/17/2020 10/05/2020 Stephen Joseph Lead ODA admiistrator ODA-100.5 3

FAA Form 8110-2 (06/20) SUPERSEDES PREVIOUS EDITION Page 2 of ___

SA09761DS 3

SA09761DS Limitations and Conditions:

3. If the holder agrees to permit another person to use this certificate to alter the product the holder must give the other person written evidence of that permission.

4. Certification Basis: Compliance determination used for this STC FAR 23.143 Amdt 23-0 FAR 23.773(a)(1) Amdt 23-0 FAR 23.301 Amdt 23-0 FAR 23.777(a)(b) Amdt 23-0 FAR 23.303 Amdt 23-0 FAR 23.867(a)(b) Amdt 23-7 FAR 23.305 Amdt 23-0 FAR 23.1301 Amdt 23-62 FAR 23.307 Amdt 23-0 FAR 23.1306 Amdt 23-61 FAR 23.395(a)(1) Amdt 23-0 FAR 23.1308(a)(b)(c) Amdt 23-57 FAR 23.397 Amdt 23-17 FAR 23.1309 Amdt 23-62 FAR 23.561(b)(e) Amdt 23-0 FAR 23.1322 Amdt 23-17 FAR 23.601 Amdt 23-0 FAR 23.1329 Amdt 23-0 FAR 23.603 Amdt 23-0 FAR 23.1335 Amdt 23-20 FAR 23.605 Amdt 23-0 FAR 23.1351(a) Amdt 23-0 FAR 23.607 Amdt 23-17 FAR 23.1357(a)(b)(c)(d) Amdt 23-0 FAR 23.609 Amdt 23-0 FAR 23.1365 Amdt 23-0 FAR 23.611 Amdt 23-0 FAR 23.1367 Amdt 23-0 FAR 23.613 Amdt 23-0 FAR 23.1431 Amdt 23-62 FAR 23.619 Amdt 23-0 FAR 23.1501(c) Amdt 23-0 FAR 23.625(a) Amdt 23-0 FAR 23.1525 Amdt 23-0 FAR 23.627 Amdt 23-0 FAR 23.1529 Amdt 23-26 FAR 23.671 Amdt 23-0 FAR 23.1541(a)(2)(b) Amdt 23-0 FAR 23.677 Amdt 23-0 FAR 23.1581 Amdt 23-0 FAR 23.685 Amdt 23-0 FAR 23.1583 (a)(h) Amdt 23-0 FAR 23.689 Amdt 23-0 FAR 23.1585(a) Amdt 23-0 FAR 23.693 Amdt 23-0 FAR 23.2540(b) Amdt 23-64 FAR 23.771(a) Amdt 23-0

-End-

## Every issue (1)

- October 5, 2020: Issued, Current. [certificate](https://openairdocs.org/files/sha256/d0/e3/d0e3db960b03f67c61f38571b09168f34b4169960035109f5e6fdc657fa59d1e)

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