# STC SA02489AK

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Rust's Flying Service Inc, United States
- Description: Aft Center of Gravity Envelope Expansion
- Applied: March 28, 2017
- Status date: February 25, 2022
- Product: Aircraft, Small Airplane
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS A-815](https://openairdocs.org/tcds/A-815)
- Certificate PDF: https://openairdocs.org/files/sha256/22/f4/22f48bf3549c816acb95cb269207e669b14553a4be7e80fa13b29ba4acf728b6
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B8BB9D9AB1955A8E862587FA004A25F9.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA02489AK

## 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.

**14 CFR 21.120)**

FAA Form 8110-2 (06/20) SUPERSEDES PREVIOUS EDITION PAGE 1 OF 3

Number: SA02489AK This certificate issued to:

Description of Type Design Change: Aft Center of Gravity Envelope Expansion.

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

2) This approval is applicable to the landplane and skiplane configuration up to 8,000 lb. maximum gross weight.

(Limitations and Conditions continued on page 3 of 3)

Rust’s Flying Service, Inc.

P.O. Box 190867 Anchorage, AK 99519

Original Product Type Certificate Number: A-815

Make: Viking Air limited Model: DHC-3

Date of application: March 28, 2017

Date of issuance: November 2, 2017 Date reissued:

Date amended: February 25, 2022 By direction of the Administrator

August A. Asay Title: Manager, Anchorage ACO Branch

Part 3 of the Civil Air Regulations.

**14 CFR 21.120)**

FAA Form 8110-2 (06/20) SUPERSEDES PREVIOUS EDITION PAGE 2 OF 3

Number: SA02489AK

Transfer Endorsement Transfer the ownership of Supplemental Type Certificate Number: SA02489AK

**14 CFR 21.120)**

FAA Form 8110-2 (06/20) SUPERSEDES PREVIOUS EDITION PAGE 3 OF 3

Date of application: March 28, 2017 Date of issuance: November 2, 2017 Date of amended: February 25, 2022 Date amended Number: SA02489AK

(Limitations and Conditions continued from page 1 of 3)

3) Airplane Flight Manual Supplement, Rust’s Flying Service, Inc. document number FW-RFS- AFMS-CG-1, Revision 1, dated February 22, 2022, or later FAA approved revision is required to be carried on the airplane as part of this approval.

4) Existing Instructions for Continued Airworthiness are considered adequate for this approval.

5) Supplemental Type Certificate SA3777NM and SA00287NY are required for this approval.

Certification Basis:

Type Certificate Number A-815 issued under CAR 10. (ICAO Annex 8, 2nd Edition (Transport Category D), and CAR 3 as amended to November 1, 1949

------------------------------------------END------------------------------------------

## Every issue (2)

- February 25, 2022: Amended, Current. [certificate](https://openairdocs.org/files/sha256/22/f4/22f48bf3549c816acb95cb269207e669b14553a4be7e80fa13b29ba4acf728b6)
- November 2, 2017: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/2f/85/2f858556545c63b5a7ec80644bddbdf985fbf633cccefdecb53a024ba8c0a1c0)

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