# STC SA2002WE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Sierra Industries Ltd., United States
- Description: Installation of recontoured wing leading edge, stall fences, wing tips and positive aileron seals.
- Applied: June 19, 1969
- Status date: July 31, 2017
- Product: Aircraft, Small Airplane
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS 3A12](https://openairdocs.org/tcds/3A12)
- Certificate PDF: https://openairdocs.org/files/sha256/1a/3b/1a3ba671ca9137c04ded16a552704c158a1074d5f1a13ecb2e65540be50e00bc
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C9F059D321F81E338625871F004ABD0B.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA2002WE

## ADs that name it (0)

None.

## Approved models (12)

- Textron Aviation Inc. 172 ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Textron Aviation Inc. 172A ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Textron Aviation Inc. 172B ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Textron Aviation Inc. 172C ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Textron Aviation Inc. 172D ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Textron Aviation Inc. 172E ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Textron Aviation Inc. 172F (USAF T-41A) ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Textron Aviation Inc. 172G ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Textron Aviation Inc. 172H (USAF T-41A) ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Textron Aviation Inc. 172I ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Textron Aviation Inc. 172K ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Textron Aviation Inc. 172L ([TCDS 3A12](https://openairdocs.org/tcds/3A12))

## 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 (5/14) Page 1 of 2

Reissued on July 31, 2017 to supersede the original STC, which has been lost or misplaced.

Number: SA2002WE

Part 3 of the Civil Air Regulations, effective 1 November 1949 as amended by 3-1 through 3-12.

Original Product – Type Certificate Number: 3A12 Make: Cessna Model: 172 through 172L

Installation of recontoured wing leading edge and the following options in accordance with the drawings called for on FAA Sealed Robertson Aircraft Drawing List No. 12. OPTIONS: stall fences – Robertson Aircraft wing tips – positive aileron seals.

Placards required: “Intentional Spins Prohibited.” The approval of this change in type design applies basically to the above model aircraft only. This approval should not be extended to other aircraft of this model on which other previously approved modifications are incorporated unless it is determined that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect upon t he airworthiness of that aircraft. A copy of this Certificate shall be maintained as part of the permanent records for the modified aircraft.

Date of Application: June 19, 1969 Date Reissued: 1/5/70; 8/10/72; 11/5/73; 11/8/84; 10/10/86;

7/21/05; 7/31/17 Date of Issuance: September 03, 1969 Date Amended: 11/30/70; 8/10/72; 2/26/71

Signature

Title Jim Grigg Manager, Fort Worth A CO Branch, Compliance & Airworthiness Division Sierra Industries, Ltd.

122 Howard Langford Drive Uvalde, TX 78801

FAA Form 8110-2 (5/14) Page 2 of 2

Transfer the ownership of Supplemental Type Certificate Number: SA2002WE

To (Name and address of transferee)

From (Name and address of grantor)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA18NW

FAA Form 8110-2 (5/14) Page 3 of 3

## Every issue (2)

- July 31, 2017: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/1a/3b/1a3ba671ca9137c04ded16a552704c158a1074d5f1a13ecb2e65540be50e00bc)
- July 21, 2005: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/48/1e/481e80c4e8edd5b3acf27e69819267e8b0d63ce92652b3641e32554feaa534f7)

---
From OpenAirDocs.org, an independent open copy of FAA and NTSB data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.