# STC SA2520WE - Type: Supplemental type certificate - Status: Current, Issued - Holder: North Country, Inc, United States - Description: Hatch installation in Bristo amphibious floats 348-4580 - Applied: February 3, 1972 - Status date: April 28, 1972 - Product: Aircraft, Small Airplane - Certification basis: Part 21 - Data sheets: [TCDS A-806](https://openairdocs.org/tcds/A-806) - Certificate PDF: https://openairdocs.org/files/sha256/08/22/08225419c6d51377f2c402770204a0d5a3c43f4bfb97044fe098177ebdffddbe - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1151F7D64D9C419085256CC200015F49.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA2520WE ## ADs that name it (0) None. ## Approved models (1) - Viking Air Limited DHC-2 Mk.I ([TCDS A-806](https://openairdocs.org/tcds/A-806)) ## 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: SA2520WE This certificate issued to: North Country, InC. 2525 14th Avenue South Seattle, Washington 98168 Xxx? CAR 10 in conformity with *ix amended to June 1, 1947 and Information Circular T/1/48 dated Original Product - Type Certificate Number: 1-806 March 3, 1948. Make: DeHavilland Model: DHC-2 MK I 348-4580 in accordance with North Country, Inc. Drawing NC-1000, Sheet 1, "A" Description of Type Design Change: Hatch installation in Bristol Amphibious Floats Change and Sheet 2, "A" Change, titled "Access Hatch Installation". Limilalins andbendilins This approval should not be extended to other specific airplanes of these same models 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 the airworthiness of the airplane. Forward and aft hatch installations are each placarded as follows: A copy of this Certificate Shafl be maintained as part of the modified aircraft Bir crept ate and the supperling date which is the busis fur approval shall remain in affect until survendered, suspended, rewcked, an a termination date is therwise estabdished by the Administ mater of the Federal Aviation Administration Date of Application: 3 February 1972 I ule wessued: Date of Issuance: 28 April 1972 I ate unendet: FEDERAL AVIATION By Direction of the Administrator Ham yA. Parker (Signature ) TOMINIST RAID Chief, Aircraft Engineering Field Office-46 (Title ) 47. ## Every issue (1) - April 28, 1972: Issued, Current. [certificate](https://openairdocs.org/files/sha256/08/22/08225419c6d51377f2c402770204a0d5a3c43f4bfb97044fe098177ebdffddbe) --- 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.