# STC SA277NW - Type: Supplemental type certificate - Status: Current, Reissued - Holder: R-S Sales Inc., United States - Description: Installation of Automatic Flagman Model No. 4 - Applied: October 22, 1975 - Status date: August 27, 2001 - Product: Aircraft, Small Airplane - Certification basis: Part 21, Part 23 - Data sheets: [TCDS A9SO](https://openairdocs.org/tcds/A9SO) - Certificate PDF: https://openairdocs.org/files/sha256/9f/2f/9f2fed74407e335c0c801afc7fd18813a414e9436936de28827f1b2030ba9b79 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C03828EF926DF00586257A2C004F5518.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/SA277NW ## ADs that name it (0) None. ## Approved models (3) - Piper Aircraft Inc. PA-36-285 ([TCDS A9SO](https://openairdocs.org/tcds/A9SO)) - Piper Aircraft Inc. PA-36-300 ([TCDS A9SO](https://openairdocs.org/tcds/A9SO)) - Piper Aircraft Inc. PA-36-375 ([TCDS A9SO](https://openairdocs.org/tcds/A9SO)) ## 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. Number SA277NW This certificate, issued to R-S Sales, Inc. 170 O’Connor Road Lewiston, ID 83501 Part 23 of the Federal Aviation Regulations. Original ProductType Certificate Number: A9SO Make: Piper Model: PA-36 Series Description of the Type Design Change: Installation of Automatic Flagman Model No. 4, in accordance with North American Industries, Inc., Drawings 105 and 111, and Installation Instructions No. 36-1000. Limitations and Conditions: Approval of this change in type design applies to the above model aircraft only. This approval should not be extended to other aircraft of these models on which other previously approved modifications are incorporated unless it is determined by the installer, 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 must be maintained as part of the permanent records for the modified aircraft. If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission. Date of application: October 22, 1975 Date reissued: 07/03/80; 04/02/86; 08/27/01 Date of issuance: April 5, 1976 Date amended: 07/03/80; 08/27/01 (Signature) Acting Manager, Seattle Aircraft Certification Office (Title) ## Every issue (1) - August 27, 2001: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/9f/2f/9f2fed74407e335c0c801afc7fd18813a414e9436936de28827f1b2030ba9b79) --- 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.