# STC SA1191NW - Type: Supplemental type certificate - Status: Current, Issued - Holder: Kenmore Air Harbor Inc, United States - Description: Installation of Edo seaplane floats - Applied: March 10, 1981 - Status date: March 11, 1981 - Product: Aircraft, Small Airplane - Certification basis: Part 3, Part 21 - Data sheets: [TCDS 3A12](https://openairdocs.org/tcds/3A12) - Certificate PDF: https://openairdocs.org/files/sha256/f6/95/f695b05f6a4a245e8ffc6a0e50e3489c4882984750c481532cd5cb6e3dd8da6d - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3C3DAFCFDA031C7C86257A3A0065C5FB.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA1191NW ## ADs that name it (0) None. ## Approved models (1) - Cessna Aircraft Company 172N ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) ## 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. United States of America Department of Transportation - Federal Aviation Administration Supplemental Type Certificate (This certificate has been reissued to replace the original certificate reported as lost.) Number SA1191NW This certificate, issued to Kenmore Air Harbor, Inc. Part 3 of the Civil Air Regulations, November 1, 1949, as amended by 3-1 through 3-12.. Original ProductType Certificate Number: 3A12 Make: Cessna Model: 172N Description of the Type Design Change: Installation of Edo model 689-2130 seaplane floats and associated systems in accordance with Edo Drawing No. 689-1100 (Sheet 1 & 2). NOTE: This installation is approved for a gross weight of 2220 pounds maximum only. Limitations and Conditions: Data pertaining to this modification are considered inadequate for duplication in orther aircraft. This approval is limited to the installation in Cessna 172N, Serial Number 17270007 only. This approval is intended for the installation of the above aircraft with a Lycoming 0-320-E2D engine (150 hp @ 2700 rpm) in accordance with Kenmore Air Harbor, Inc. STC SA1119NW. A copy of this Certificate and Addendum No. SA1191NW shall be maintained as part of the permanent records for the modified aircraft. Date of application: March 10, 1981 Date reissued: Date of issuance: March 11, 1981 Date amended: FAA FORM 8110-2 (5/14) PAGE 1 OF 4 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 United States of America Department of Transportation - Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number SA1191NW Kenmore Air Harbor, Inc. Issued: March 11, 1981 Reissued: Amended: The conditions and limitations of the original Type Certificate No. 3A12 apply except as follows: This Addendum, which is part of Supplemental Type Certificate NO. SA1191NW, prescribes the conditions and limitations under which the STC was issued meets the airworthiness requirements of the Civil Air Regulatio ns. 1. CESSNA 172N, 4PCLM (NORMAL CATEGORY) AS MODIFIED BY STC SA1191NW Engine: Lycoming 0-320-E2D Fuel: 80/87 minimum grade aviation gasoline Engine Limits: For all operations: 2700 rpm (150 Hp) Propeller and Propeller Limits: McCauley 1A175/ETM8042 (Seaplane Only) Static rpm: Not over 2545, not under 2445 Diameter: Not over 80”, not under 78.4” Spinner: Drawing 0550320 C. G. Range: Same as Type Certificate Data Sheet 3A12 Maximum Weight: 2220 pounds (Same as TCDS 3A12) Serial Number Eligible: 17270007 only Equipment: Cessna Pilot’s Operating Handbook for Cessna 172M must be maintained in the airplane at all times. Note 1: Current weight and balance report including list of equipment in the certified empty weight must be in the aircraft. Note 2: In addition to the Placards and Markings required by Type Certificate Data Sheet 3A12, Note 2, apply the following: a. Adjacent to the fuel filler cap: b. Adjacent to or in close proximity to the aircraft identification plate: **FAA FORM 8110-2 (5/14) PAGE 3 OF 4 PAGES** **80/87 OCTANE MINIMUM LYCOMING O-320-E2D INSTALLED PER KENMORE AIR HARBOR, INC.** **STC SA1119NW** Number SA1191NW Kenmore Air Harbor, Inc. Issued: March 11, 1981 Reissued: Amended: Note 2: Placards (continued): c. The following placard is to be in front and in full view of the pilot: Note 3: With the described engine and propeller installation, performance will be at least equal to or better than that given in the original FAA Approved Airplane Flight Manual for the Cessna 172M airplane. - END - **FAA FORM 8110-2 (5/14) PAGE 4 OF 4 PAGES** **LYCOMING O-320-E2D INSTALLED PER KENMORE AIR HARBOR, INC.** STC SA1119NW. CESSNA 172M PILOT’S OPERATING HANDBOOK APPLIES. ## Every issue (1) - March 11, 1981: Issued, Current. [certificate](https://openairdocs.org/files/sha256/f6/95/f695b05f6a4a245e8ffc6a0e50e3489c4882984750c481532cd5cb6e3dd8da6d) --- 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.