# STC SE2107NM - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Kenmore Air Harbor LLC, United States - Description: Modify crankcase, crankshaft, carburetor and install cylinders from 520 cubic inch displacement engine and revise operating limits as shown in addendum SE2107NM. - Applied: March 12, 1983 - Status date: April 5, 2019 - Product: Engine - Certification basis: Part 21, Part 33 - Data sheets: [TCDS E-273](https://openairdocs.org/tcds/E-273) - Certificate PDF: https://openairdocs.org/files/sha256/ef/49/ef496e07de2280ae315421b60421fdf542d35bf1747cbb5f3491c114675da142 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8646041DF441F13A862585DE003B851D.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SE2107NM ## ADs that name it (0) None. ## Approved models (1) - Teledyne Continental Motors O-470-U ([TCDS E-273](https://openairdocs.org/tcds/E-273)) ## 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 SE2107NM This certificate, issued to Kenmore Air Harbor, LLC. 6321 NE 175th Street Kenmore, WA 98028 Part 33 of the Federal Aviation Regulations. Original ProductType Certificate Number: E-273 Make: Continental Model: 0-470-U Description of the Type Design Change: Modify Crankcase, Crankshaft, Carburetor and install Cylinders from 520 cubic inch displacement engine and revise operating limits as shown in addendum SE2107NM. This is in accordance with Kenmore Air Harbor, Inc. Report No. 13008, Rev.1, dated July 9, 1998, or later FAA-approved revisions. NOTE: This engine modification is limited to installation in the Cessna 180G, 180H, 180J, and 180K aircraft only. Limitations and Conditions: Approval of this change in type design applies to the above engine model only. This approval should not be extended to other engines 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 engine. A copy of this Certificate and Addendum amended March 1, 1999, or later FAA- approved revision, must be maintained as part of the permanent records for the modified engine. 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: March 12, 1983 Date reissued: April 5, 2019 Date of issuance: December 9, 1983 Date amended: March 1, 1999 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 Number SE2107NM Kenmore Air Harbor, LLC. Issued: December 9, 1983 Reissued: April 5, 2019 Amended: March 1, 1999 **SUPPLEMENTAL TYPE CERTIFICATE ADDENDUM NO. SE2107NM** The conditions and limitations of Type Certificate Data Sheet No. E273 apply except where superseded by the following: This Addendum, which is part of the Supplemental Type Certificate No. SE2107NM, prescribes the conditions and limitations under which the STC was issued and meets the airworthiness requirements of Civil Air Regulations Part 3. A copy of this Addendum shall be maintained as part of the modified aircraft permanent records. SUPPLEMENTAL TYPE CERTIFICATE HOLDER: Kenmore Air Harbor, LLC. **CONTINENTAL 0-470-U AS MODIFIED BY STC SE2107NM** Engine: Teledyne Continental 0-470-U C 0-520KAH-2 Fuel: 100/100LL minimum grade aviation gasoline Engine Limits: Maximum Continuous, 2700 rpm and 270 hp Weight (Dry), LB 422 C.G. Location (Basic Engine) . Fwd of Rear Face of Acc. Case, Inc. 12.0 . Below Crankshaft Centerline Inc. 0.31 . Beside Crankshaft Centerline Forward 1-3-5 Side, Inc. 0.11 * Original Engine Mode Designation Carburetion: Marvel Schebler MA-4-5 (KAH #10-4893KAH or #10-5192KAH) Oil Sump Capacity, Qts. 12; 6 usable at 15º noseup and nosedown attitudes APPLICABLE NOTES: 1, 2, 3, 4, 9, 10, 11, and 13 or TCDS E273. 1. See Type Certification Data Sheet No. E273. 2. Fuel inlet limits: Fuel Minimum 15.5in. gasoline; Maximum 6.0 BT. Oil Pressure limits: See Type Certification Data Sheet No. E273 **FAA FORM 8110-2 (5/14) PAGE 3 OF 4 PAGES** Number SE2107NM Kenmore Air Harbor, LLC. Issued: December 9, 1983 Reissued: April 5, 2019 Amended: March 1, 1999 SUPPLEMENTAL TYPE CERTIFICATE ADDENDUM NO. SE2107NM (Continued) APPLICABLE NOTES (Continued): 3. See Type Certification Data Sheet E273. 4. Engines incorporate crankshaft with one 4th and one 5th and two 6th order dampers. 5. Does not apply. 7&8. Does not apply. 9. See Data Sheets E273. 10. See Data Sheet E273. 11. See Data Sheet E273. 12. Does not apply. 13. See Data Sheet E273. 14. Supplemental Engine Data Plate to Read as Follows: Part Number K13008-1 - END - **FAA FORM 8110-2 (5/14) PAGE 4 OF 4 PAGES** **SN CONVERTED TO 0-520KAH-2 PER STC SE2107NM HPTO-HPMC 270 RPM 2700** ## Every issue (2) - April 5, 2019: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/ef/49/ef496e07de2280ae315421b60421fdf542d35bf1747cbb5f3491c114675da142) - March 1, 1999: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/72/86/7286df5ff9f0c1b3e5f05f0b9852c9b23d3f797fb682aac29a75cb22d17e7c38) --- 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.