# STC SA12291AK

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Rust’s Flying Service, United States
- Description: Tail Wheel Fork Installation
- Applied: January 31, 2025
- Status date: February 4, 2026
- Product: Aircraft, Small Airplane
- Data sheets: [TCDS A-815](https://openairdocs.org/tcds/A-815)
- Certificate PDF: https://openairdocs.org/files/sha256/a2/9d/a29d53bfec5fdd58ed39861bad480b978f8f08f03868212f2e91ecf1cd935b51
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID190954094520260209181543.0001
- DRS record last changed: February 9, 2026
- Page: https://openairdocs.org/stc/SA12291AK

## ADs that name it (0)

None.

## Approved models (1)

- Viking Air Limited DHC-3 ([TCDS A-815](https://openairdocs.org/tcds/A-815))

## 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.

This certificate issued to: Rust’s Flying Service 14052 East 2nd Street Talkeetna, AK 99676 Original Product Type Certificate Number: A-815

Make: Viking Air Limited Model: DHC-3 Description of Type Design Change:

Tail Wheel Fork Installation for the DeHavilland Model DHC-3 per Installation Instruction “YCA-C3UT144-IPL Tail Wheel Assy IPL Supp”, Revision IR., dated 04 March 2024, or later FAA approved revision.

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

2. For Instructions on Continued Airworthiness refer to “Rust’s DHC -3 OEM Tail Wheel Fork Installation ICA”, document number YCA-TAILOEM-ICA, Revision A., dated December 29, 2025, or later FAA-approved revision.

3. Installation of Cleveland wheel 40-76A and 8.50-10 tire requires separate FAA approval.

Part 3 of the Civil Air Regulations.

for Gregory S. DiLibero Title: Manager, West Certification Branch

Date of application: January 31, 2025 Date reissued:

Date of issuance: February 4, 2026 Date amended:

This certificate may be transferred or made available to third persons by licensing agreements in accordance with 14 CFR 21. 47. Th e STC’s supporting documentation (drawings, instructions, specifications, flight manual supplements, etc.) is the property of the STC holder.

Transfer Endorsement Transfer the ownership of Supplemental Type Certificate Number: SA12291AK

## Every issue (1)

- February 4, 2026: Issued, Current. [certificate](https://openairdocs.org/files/sha256/a2/9d/a29d53bfec5fdd58ed39861bad480b978f8f08f03868212f2e91ecf1cd935b51)

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