# STC SA635NW

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: North Sound Aviation, United States
- Description: Conversion of the landing gear on Cessna 182 from a tricycle to a conventional tailwheel configuration similar to a Cessna 180
- Applied: May 18, 1978
- Status date: August 4, 1978
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 3A13](https://openairdocs.org/tcds/3A13)
- Certificate PDF: https://openairdocs.org/files/sha256/23/f9/23f9b3b5d212eb91e178f3f94edaf07dd8a449cfc3c79632111f65cc4a34190d
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/609C358DDD59F3E986257A40006785E2.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA635NW

## ADs that name it (0)

None.

## Approved models (1)

- Cessna Aircraft Company 182 ([TCDS 3A13](https://openairdocs.org/tcds/3A13))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate SIC Number SA635NW This certificate issued to: NORTH SOUND AVIATION, INC.

Purt 3 of the CIViL Air Fegulations.

Original Product Type Purificate Lumber: 3A13 Make: Cessna Model: 182 Description of Type Design Change: Conversion of the landing gear on Cessna 182 from a tricycle to a conventional tailwheel configuration similar to a Cessna 180 in accordance with North Sound Aviation, Inc Installation Instructions No. 182-100.

Limitations and Conditions: Data pertaining to this modification are considered inadequate for duplication in other aircraft. This approval is limited to the installation in Cessna Model 182 Serial Number 33471 only. A copy of this Certificate and North Sound Aviation, Inc. Installation Instruction No.

182-100 shall be maintained as part of the permanent records for the modified aircraft.

Date of Application: . May 18, 1978 I ate missued:

Date of Issuance: August 4, 1978 Date Amended:

FEDERAL AVIATION Chadio A Shreder ( Signature CHINES BATOR Chief, Engineering and Manufacturing Branch (Title) 47 FAA For- 8110-2 (10-68)

## Every issue (1)

- August 4, 1978: Issued, Current. [certificate](https://openairdocs.org/files/sha256/23/f9/23f9b3b5d212eb91e178f3f94edaf07dd8a449cfc3c79632111f65cc4a34190d)

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