STC SA221NW

Number SA221NW

This certificate, issued to Kenmore Air Harbor, LLC.

6321 NE 175th Street Kenmore, WA 98028

Part 3 of the Civil Air Regulations,effective November 1, 1949.

Original ProductType Certificate Number: 5A6 Make: Cessna Model: 180J

Description of the Type Design Change: Installation of EDO model 249-2870 floats in accordance with EDO Corporation Installation Drawing No. 16775, except when rudder steering cables must be connected to the tailwheel steering bellcranks.

Limitations and Conditions: Data pertaining to this modification are considered inadequate for duplication on other aircraft. This approval is limited to the installation on Cessna 180J, Serial Numbers 18052356 and 18052317 only. A copy of this Certificate and Addendum No. SA221NW shall be maintained as part of the permanent records for the modified aircraft.

Date of application: October 6, 1975 Date reissued: April 5, 2019

Date of issuance: October 16, 1975 Date amended: May 18, 1978; July 22, 1994

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 SA221NW

Kenmore Air Harbor, LLC.

Issued: October 16, 1975 Reissued: April 5, 2019 Amended: May 18, 1978; July 22, 1994

SUPPLEMENTAL TYPE CERTIFICATE ADDENDUM NO. SA221NW

The conditions and limitations of the original specifications apply except as follows:

This Addendum, which is part of the Supplemental Type Certificate No. SA221NW, 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 perm anent records.

SUPPLEMENTAL TYPE CERTIFICATE HOLDER: Kenmore Air Harbor, LLC.

CESSNA 180J (SEAPLANE-NORMAL CATEGORY) AS MODIFIED BY STC SA221NW

Serial Numbers Eligible: Serial Numbers 18052356 and 18052317

Airspeed Limits: Never exceed – 184 mph (160 knots) Maneuvering – 122 mph (106 knots) Max. structural cruising – 160 mph (139 knots) Flaps extended – 100 mph (87 knots)

Powerplant Instrument Markings: Same as specified

Maximum Weight: 2820 pounds

Center of Gravity Limits With Edo 249-2870 Floats: (+40.2) to (+43.9) at 2820 pounds (+35.0) to (+43.9) at 2125 pounds or less

Placards: A placard must be installed on the instrument panel in full view of the pilot as follows:

- END -

FAA FORM 8110-2 (5/14) PAGE 3 OF 3 PAGES

GROSS WEIGHT IS LIMITED TO 2820 POUNDS WHEN EDO 249-2870 FLOATS ARE INSTALLED.

PILOT IS RESPONSIBLE FOR PROPER LOADING.

(SEE WEIGHT & BALANCE DATA)