# STC SA02175AK

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Airframes Alaska LLC, United States
- Description: Fabrication of Airframes Alaska LLC Heavy Duty  Standard Length or 3-inch Extended Main Landing Gear
- Applied: February 23, 2001
- Status date: March 14, 2023
- Product: Aircraft, Small Airplane
- Data sheets: [TCDS 1A2](https://openairdocs.org/tcds/1A2)
- Certificate PDF: https://openairdocs.org/files/sha256/5c/88/5c8880104ac6ffaded03acc1030f7ccc26b94d33a831da12f76253e203814698
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID138410134720230321181548.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA02175AK

## ADs that name it (0)

None.

## Approved models (16)

- Piper Aircraft Inc. PA-18 ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- Piper Aircraft Inc. PA-18-105 (Special) ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- Piper Aircraft Inc. PA-18-125 (Army L-21A) ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- Piper Aircraft Inc. PA-18-135 ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- Piper Aircraft Inc. PA-18-150 ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- Piper Aircraft Inc. PA-18A ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- Piper Aircraft Inc. PA-18A-135 ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- Piper Aircraft Inc. PA-18A-150 ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- Piper Aircraft Inc. PA-18AS-125 ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- Piper Aircraft Inc. PA-18AS-135 ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- Piper Aircraft Inc. PA-18AS-150 ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- Piper Aircraft Inc. PA-18S ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- Piper Aircraft Inc. PA-18S-105 (Special) ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- Piper Aircraft Inc. PA-18S-125 ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- Piper Aircraft Inc. PA-18S-135 ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- Piper Aircraft Inc. PA-18S-150 ([TCDS 1A2](https://openairdocs.org/tcds/1A2))

## 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: SA02175AK This certificate issued to:

(Continued on Page 3 of 3)

Airframes Alaska, LLC 81 East Commercial Drive Palmer, AK 99645

Type Certificate Number: 1A2

Make: Piper

Model: PA-18, PA-18S, PA-18 “105” (Special), PA-18S “105”(Special), PA-18A, PA-18 “125” (Army L-21A), PA-18S “125”, PA-18AS “125”, PA-18 "135" (Army L-21B), PA-18A “135”, PA-18S “135”, PA-18AS “135, PA-18 “150”, PA-18A “150”, PA-18S “150”, PA-18AS “150”

Date of application: February 23, 2001

Date of issuance: May 14, 2001 Date reissued: January 16, 2008

Date amended: January 7, 2013;

March 14, 2023 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: SA02175AK

Transfer Endorsement Transfer the ownership of Supplemental Type Certificate Number: SA02175AK

**14 CFR 21.120)**

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

(Continuation Sheet) Date of application: February 23, 2001 Date of issuance: May 14, 2001 Date reissued: January 16, 2008 Date amended: January 7, 2013, March 14, 2023

Number: SA02175AK

(Continuance from Page 1 of 3)

Fabrication of Airframes Alaska, LLC steel “Heavy Duty” Standard Length or 3-inch Extended Main Landing Gear, in accordance with Airframes Alaska LLC Master Data List, Document No.

MDL-AI-01-01, Revision B, dated November 17, 2012, and installation in accordance with USAF T.O. 1L-21A-2, Sections 2-81 through 2-88, Main Landing Gear, revised October 14, 1955, or later FAA approved revisions.

- or - Fabrication of Titanium Main Landing Gear, in accordance with Airframes Alaska LLC Master Data List Document No. MDL-AI-01-02, Revision C, dated November 10, 2022, and installation in accordance with Installation Instructions and Instructions for Continued Airworthiness, PA-18 Series Titanium Landing Gear, revision B, dated March 14, 2023, or later FAA approved revisions.

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

2) The steel gear is a direct replacement part, and the FAA has determined no Instructions for Continued Airworthiness are required. 14 CFR Part 43 is adequate to ensure continued airworthiness of the steel landing gear modification.

3) Maintain the titanium 3-inch Extended Main Landing Gear in accordance with Airframes Alaska Installation Instructions and Instructions for Continued Airworthiness, PA-18 Series Titanium Landing Gear, revision B, dated March 14, 2023, or later FAA approved revisions.

--------------------- End ---------------------

## Every issue (4)

- March 14, 2023: Amended, Current. [certificate](https://openairdocs.org/files/sha256/5c/88/5c8880104ac6ffaded03acc1030f7ccc26b94d33a831da12f76253e203814698)
- January 7, 2013: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/76/a9/76a98ec3739b2ad4dd6dbaa4282be0633c9edddfb92768eded60a96bec749adb)
- January 16, 2008: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/63/3d/633d723a3a4a0700676b6208ed9efae6399668e594ba92a7b7c057e0bf32b3c2)
- May 14, 2001: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/f1/3b/f13b096902378f49b134843fec62266a1dad5a2c444d69c0559bf910396b9f40)

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