# STC SA04623NY - Type: Supplemental type certificate - Status: Current, Issued - Holder: Regent Aircraft Services, Canada - Description: Installation of Type 1 (PAA Design group) DHC-6 Twin Otter Seats - Applied: January 28, 2021 - Status date: April 19, 2021 - Product: Aircraft, Small Airplane - Certification basis: Part 23 - Foreign approvals: TCCA SA20-16 Issue 1 - Data sheets: [TCDS A9EA](https://openairdocs.org/tcds/A9EA) - Certificate PDF: https://openairdocs.org/files/sha256/8a/67/8a67b10afa31fedfd576b61b4625b461d061ea685910c91ab940b3edece40878 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/ACE2787DA2133B3E862586CD005621D6.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA04623NY ## ADs that name it (0) None. ## Approved models (4) - Viking Air Limited DHC-6-100 ([TCDS A9EA](https://openairdocs.org/tcds/A9EA)) - Viking Air Limited DHC-6-200 ([TCDS A9EA](https://openairdocs.org/tcds/A9EA)) - Viking Air Limited DHC-6-300 ([TCDS A9EA](https://openairdocs.org/tcds/A9EA)) - Viking Air Limited DHC-6-400 ([TCDS A9EA](https://openairdocs.org/tcds/A9EA)) ## 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 (11/20) SUPERSEDES PREVIOUS EDITION Page 1 of ___ United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: IMPORT SA04623NY Regent Aircraft Services Hanger 5 -620 McTavish Road NE Calgary, Alberta Canada T2E 7G6 Part 23 Title 14 Code of Federal Regulations A9EA Viking Air Limited DHC-6-100, DHC-6-200, DHC-6-300, and DHC-6-400 Series 1. Installation of Type 1 (PAA Design group) DHC-6 Twin Otter Seats must be in accordance with Modification Data Summary MDS R15081255 TCCA approved Sept. 15, 2015, or later TCCA approved revision. (See Description of Type Design Change Continued on Page 3 of 4) 1. If the holder agrees to permit another person to use this certificate to alter a product, the holder must give the other person written evidence of that permission. (Limitations and Conditions Continued on Page 4 of 4) January 28, 2021 April 19, 2021 Timothy J. Hadsall Acting Manager, New York ACO Branch Compliance & Airworthiness Division Aircraft Certification Service 4 FAA Form 8110-2 (11/20) SUPERSEDES PREVIOUS EDITION Page 2 of ___ United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: **IMPORT SA04623NY 4** FAA Form 8110-2 (11/20) SUPERSEDES PREVIOUS EDITION Page ___ of ___ United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: IMPORT SA04623NY Date of Issuance: April 19, 2021 Description of Type Design Change (continued): 2. Installation of Type 2 (Infinion) DHC-6 Twin Otter Seats must be in accordance with Infinion Certification Engineering Inc. MDL-2034-01, Issue 1, TCCA approved Oct. 16, 2020, or later TCCA approved revisions. 3. Maintenance for Type 1 Seats must be in accordance with PAA Design Group Component Maintenance Manual CMM R15081258 Issue A, TCCA accepted Sept. 15, 2015, or later TCCA accepted revisions. 4. Maintenance for Type 2 Seats must be in accordance with Infinion Certification Engineering Inc. Component Maintenance Manual CMM-2034-01 Issue 1, TCCA accepted May 8, 2020, or later TCCA accepted revisions. 2. The installer must determine whether this design change is compatible with previously approved modifications. 3. This STC is applicable to all serial numbers for this Make-Model. Based on title 14 CFR 21.115 and 21.101, and the FAA policy for significant changes in FAA Order 8110.48, the certification basis for the Viking Air Limited Model DHC-6-100, DHC-6-200, DHC-6-300, DHC-6-400 is as follows: a. The type certification basis for the Viking Air Limited Model DHC-6-100, DHC-6-200, DHC-6-300, DHC-6-400 is as shown on TCDS A9EA for parts not changed or not affected by the change. FAA Form 8110-2 (11/20) SUPERSEDES PREVIOUS EDITION Page ___ of ___ United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: IMPORT SA04623NY Date of Issuance: April 15, 2021 b. The type certification basis for the Viking Air Limited is as shown on TCDS A9EA for parts changed or affected by the change with the following additional requirements: 14 CFR Part 23 including amendments 23-1 through 23-6 plus 14 CFR 23.1413, and 23.1557 at amendment 23-7 14 CFR 23.1529 at amendment 23-8 14 CFR 23.785, 23.787, 23.803, 23.807 and 23.815 at amendment 23-34 14 CFR 23.852 at amendment 23-49 SFAR 23 at amendment 23-1 ----------END---------- 4 4 ## Every issue (1) - April 19, 2021: Issued, Current. [certificate](https://openairdocs.org/files/sha256/8a/67/8a67b10afa31fedfd576b61b4625b461d061ea685910c91ab940b3edece40878) --- 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.