# STC SA1601NM

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: North Sound Aviation, United States
- Description: Installation of 8.50x6 6 ply aircraft tires
- Applied: March 18, 1982
- Status date: April 19, 1982
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 5A6](https://openairdocs.org/tcds/5A6), [TCDS 3A24](https://openairdocs.org/tcds/3A24)
- Certificate PDF: https://openairdocs.org/files/sha256/e7/8d/e78dadb08073e14c1d04fb053827cea0df08794f0ca67903e47c841a14b4436f
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/531E6E2C435DE2EF86257A13006BAFF6.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1601NM

## ADs that name it (0)

None.

## Approved models (19)

- Cessna Aircraft Company 180 ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- Cessna Aircraft Company 180A ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- Cessna Aircraft Company 180B ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- Cessna Aircraft Company 180C ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- Cessna Aircraft Company 180D ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- Cessna Aircraft Company 180E ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- Cessna Aircraft Company 180F ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- Cessna Aircraft Company 180G ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- Cessna Aircraft Company 180H ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- Cessna Aircraft Company 180J ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- Cessna Aircraft Company 180K ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- Cessna Aircraft Company 185 ([TCDS 3A24](https://openairdocs.org/tcds/3A24))
- Cessna Aircraft Company 185A ([TCDS 3A24](https://openairdocs.org/tcds/3A24))
- Cessna Aircraft Company 185B ([TCDS 3A24](https://openairdocs.org/tcds/3A24))
- Cessna Aircraft Company 185C ([TCDS 3A24](https://openairdocs.org/tcds/3A24))
- Cessna Aircraft Company 185D ([TCDS 3A24](https://openairdocs.org/tcds/3A24))
- Cessna Aircraft Company 185E ([TCDS 3A24](https://openairdocs.org/tcds/3A24))
- Cessna Aircraft Company A185E ([TCDS 3A24](https://openairdocs.org/tcds/3A24))
- Cessna Aircraft Company A185F ([TCDS 3A24](https://openairdocs.org/tcds/3A24))

## 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 Number SA1601NM This certificate issued to: North Sound Aviation Purt 3 of the CIVIL Air Regulations Original Product -Type Certificate Number: 5A6 3A24 Make: Cessna Cessna Model: 180 & 185 Series Aircraft Description of Type Design Change: Installation of 8.50×6 6 ply aircraft tires in accordance with North Sound Aviation Drawing No. 180-102.

Limilalinsand bendilions: Approval of this change in type design applies to the above model aircraft only. This approval should not be extended to aircraft of this model on which other previously approved modifications are incorporated unless it is determined that the relationship between this change and any of those other previously approved modifications, including changes in type design, will introduce no adverse effect upon the airworthiness of that aircraft. A copy of this Certificate shall be maintained as part of the permanent records for the modified

Date of Application: March 18, 1982 I ule reissued:

Date of Issuance: April 19, 1982 I ate umendal:

FEDERAL AVIATION By Direction of the Administrator Namell M Pedron (Signature ) TONIN ATO Chief, Seattle Area Aircraft / Certification Office, ANM-100S (Title)

47.

**FAA FOR 8110-2 (10-68)**

## Every issue (1)

- April 19, 1982: Issued, Current. [certificate](https://openairdocs.org/files/sha256/e7/8d/e78dadb08073e14c1d04fb053827cea0df08794f0ca67903e47c841a14b4436f)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.