# STC SA649NW - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Kenmore Air Harbor LLC, United States - Description: Modification to increase gross weight to 3,190 lbs of landplane, or seaplane - Applied: April 5, 1978 - Status date: April 5, 2019 - Product: Aircraft, Small Airplane - Certification basis: Part 21 - Data sheets: [TCDS 5A6](https://openairdocs.org/tcds/5A6) - Certificate PDF: https://openairdocs.org/files/sha256/fb/ee/fbeea59cb52994740d24fe521edf9a097972025e807cca8ac0d561d067d02f69 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/58FAA1811E0782AE862585CE00549187.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA649NW ## ADs that name it (0) None. ## Approved models (4) - 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)) ## 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 SA649NW This certificate, issued to Kenmore Air Harbor, LLC. 6321 NE 175th Street Kenmore, WA 98028 Part 3 of the Civil Air Regulations. Original ProductType Certificate Number: 5A6 Make: Cessna Model: 180G, 180H, 180J, and 180K Description of the Type Design Change: Modification to increase gross weight to 3,190 lbs. of landplane or seaplane equipped with EDO 628-2960 floats; OR gross weight increase to 3,100 lbs. for amphibian airplanes equipped with EDO 597-2790 amphibious floats in accordance with the Kenmore Air Harbor, Inc. Insta llation Instructions No K9858, issued August 1, 1978, revised July 5, 1984, and December 1, 2003, or later FAA - approved revisions. Limitations and Conditions: Approval of this change in type design applies to the above aircraft model only. This approval should not be extended to other 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, Continuation Sheet, and Kenmore Air Harbor, Inc. Installation Instruction K9858 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: April 5, 1978 Date reissued: April 5, 2019 Date of issuance: August 8, 1978 Date amended: August 23, 1978; April 12, 1979; July 14, 1984; December 4, 2003; December 22, 2003 FAA FORM 8110-2 (5/14) PAGE 1 OF 3 PAGES By direction of the Administrator (Signature) Acting Manager, Seattle ACO Branch (Title) Transfer the ownership of Supplemental Type Certificate Number to (Name of Transferee) (Address of Transferee) (Number and Street) (City, State, and ZIP Code) from (Name of Grantor) (Print or Type) (Address of Grantor) (Number and Street) (City, State, and ZIP Code) Signature of Grantor (In Ink): U.S. GPO: 1987-763-289 Number SA649NW Kenmore Air Harbor, LLC. Issued: August 8, 1978 Reissued: April 5, 2019 Amended: August 23, 1978; April 12, 1979; July 14, 1984; December 4, 2003; December 22, 2003 The conditions and limitations of the original Type Certificate No. 1A15 apply except as follows: 1. MODEL 180G, 180H, 180J, and 180K 6PCL-SM (NORMAL CATEGORY) AS MODIFIED BY STC SA649NW C.G Range: Floatplane (EDO 628-2960) (+40.0) to (+45.0) at 3190 pounds (+36.0) to (+45.0) at 2400 pounds Straight line variation between points given Landplane (+41.3) to (+46.5) at 3190 pounds (+33.5) to (+46.5) at 2100 pounds Maximum Weight: 3190 pounds Datum: Front face of firewall (at bottom) 2. MODEL 180G, 180H, 180J and 180K 6PCL-SM (NORMAL CATEGORY) AS MODIFIED BY STC SA649NW C.G. Range: Amphibian (EDO 597-2790) (+39.5) to (+45.0) at 3100 pounds (+36.0) to (+45.0) at 2400 pounds or less Straight line variation between points given Maximum Weight: 3100 pounds Datum: Front face of firewall (at bottom) NOTE: Current weight and balance report including list of equipment in certified empty weight must be in the aircraft. - END - **FAA FORM 8110-2 (5/14) PAGE 3 OF 3 PAGES** ## Every issue (2) - April 5, 2019: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/fb/ee/fbeea59cb52994740d24fe521edf9a097972025e807cca8ac0d561d067d02f69) - December 22, 2003: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/cf/ed/cfede3f90ce947a3b358f226ceb8e1019918e96452820a7c49a44328dad3305e) --- 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.