# STC SA365NW - Type: Supplemental type certificate - Status: Current, Reissued - Holder: PK Floats Inc, United States - Description: Installation of Pee Kay Model 2300 seaplane floats - Applied: September 20, 1976 - Status date: December 7, 2016 - Product: Aircraft, Single-Engine - Certification basis: Part 3, Part 21 - Data sheets: [TCDS 3A12](https://openairdocs.org/tcds/3A12) - Certificate PDF: https://openairdocs.org/files/sha256/e4/7c/e47cc6716f9d80dbd93b3f399a0f9ebb552938bce6c806e8dc08352dddce42bd - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4C21B30CA26941C5862580830070FF52.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/SA365NW ## ADs that name it (0) None. ## Approved models (7) - The Cessna Aircraft Company 172D ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - The Cessna Aircraft Company 172E ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - The Cessna Aircraft Company 172F (USAF T-41A) ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - The Cessna Aircraft Company 172G ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - The Cessna Aircraft Company 172H (USAF T-41A) ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - The Cessna Aircraft Company 172I ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - The Cessna Aircraft Company 172K ([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. Number SA365NW FAA Form 8110-2 (5/14) Page 1 of 6 This certificate issued to: P.K. Floats, Inc. 32 Flyaway Drive Lincoln, ME 04457 Part 3 of the Civil Air Regulations. Original Product - Type Certificate Number: 3A12 Make: Cessna Model: 172D through 172K (Seaplane) Installation of Pee Kay Model 2300 seaplane floats in accordance with Pee Kay Float Division Installation Instructions 23II2700-1, Rev. -, dated September 21, 1976, or later FAA approved revision. The installer must determine whether this design change is compatible with previously approved modifications. This approval is intended for installation in the above models with the Franklin 6A-350-C2 engine installation in accordance with Seaplane Flying, Inc. STC SA340NW. A copy of this Certificate must be maintained as part of the permanent records for the modified aircraft. (See “Continuation Sheets”, Pages 3 thru 6) Date of Application: September 20, 1976 Date reissued: September 19, 1980, October 25, 2000 December 7, 2016 Date of Issuance: October 05, 1976 Date amended: October 25, 2000 Signature Nicholas Faust Acting Manager, Boston Aircraft Certification Office Title FAA Form 8110-2 (5/14) Page 2 of 6 To (Name and address of transferee) Name: Address (Number and Street, City, State, and ZIP Code): From (Name and address of grantor) Name: Address (Number and Street, City, State, and ZIP Code): (Continuation Sheet) Number SA365NW FAA Form 8110-2 (5/14) Page 3 of 6 Limitations and Conditions: (continued from Page 1 of 6) The Conditions and Limitations of Type Certificate Data Sheet No. 3A12 apply except as follows: **CESSNA MODELS 172D THROUGH 172K, 4PCL-SM (NORMAL CATEGORY) AS MODIFIED BY STC SA365NW** Engine: Franklin 6A-350-C2 Fuel: 100/130 Minimum Grade Aviation Gasoline Engine Limits: For all Operations, 2800 RPM (215 Hp) Propeller and Propeller Limits: 1. McCauley 2A31C21/84S-6 Diameter: 78” max; 72” minimum Pitch Settings: (@20” station) 12° low; 23° high Governor: Woodward 210453 Spinner: Cessna Drawing 0552016-1 2. Hartzell HC-C2YF-1BF/F8459-4 to -8 Diameter: 80” max; 76” minimum Governor: Woodward 210453 Spinner: Hartzell P/N 82A4203 Powerplant Instrument Markings: Oil Temperature: Green Arc 100° to 235°F – Normal Operating Range Yellow Arc 60°F – Caution Red Line 235°F – Maximum (Continuation Sheet) Number SA365NW FAA Form 8110-2 (5/14) Page 4 of 6 Limitations and Conditions: (continued from Page 3 of 6) Oil Pressure: Green Arc 55 to 80 PSI – Normal Operating Range Yellow Arc 25 to 55 PSI and 80 to 100 PSI – Caution Red Line 25 PSI Minimum, 100 PSI Maximum Tachometer: Green Arc 500 to 2600 RPM – Normal Operating Range Red Line 2600 RPM – Maximum Fuel Pressure: Green Arc 10 to 14 PSI – Normal Operating Range Red Line 14 PSI – Maximum at Sea Level Cylinder Head Temperature (Well Type Thermocouple): Green Arc 200° to 390°F – Normal Operating Range Red Line 390°F – Maximum Airspeed Limits: Maneuvering 127 mph (109 K) True Ind. Max Structural Cruising 145 mph (125 K) True Ind. Never Exceed 174 mph (151 K) True Ind. Flaps Extended 100 mph ( 87 K) True Ind. C.G. Range: Seaplane: (Pee Kay 2300 Floats) Normal Category (+38.5) to (+47.3) at 2499 lbs. (+35.0) to (+47.3) at 1950 lbs. or less Maximum Weight: 2499 lbs. Serial Numbers: See Type Certificate Data Sheets 3A12 (Continuation Sheet) Number SA365NW FAA Form 8110-2 (5/14) Page 5 of 6 Limitations and Conditions: (continued from Page 4 of 6) NOTE 1: Current weight and balance report, together with a list of equipment, included in certificated empty weight and loading instructions, when necessary, must be provided for each aircraft at the time of modifications. NOTE 2: Placards and Operating Limitations of T.C. Data Sheet 3A12 apply except when as noted herein: A. Placard Pee Kay P/N 23-2008-3: **FLOATPLANE (PEE KAY MODEL 2300 FLOATS) THIS AIRPLANE MUST BE OPERATED** AS A NORMAL CATEGORY AIRPLANE IN COMPLIANCE WITH THE OPERATING LIMTATIONS AS STATED IN THE FORM OF PLACARDS, MARKINGS, AND MANUALS. OPERATING LIMITATIONS Maneuvering Speed 127 MPH TIAS (109 K) Gross Weight 2499 lbs. C.G. Range (+38.5) to (+47.3) at 2499 lbs. (+35.0) to (+47.3) at 1950 lbs. or less Straight Line Variation Between Points Total Occupancy Weight SEE LOADING SCHEDULE Flight Load Factor Flaps Up: +3.8, -1.52 Flaps Down: +3.0 NO ACROBATIC MANEUVERS, INCLUDING SPINS, APPROVED. RECOVERY PROCEDURE FROM UNINTENTIONAL SPIN: NEUTRALIZED AILERONS, THEN CONTROL. ALTITUDE LOSS IN A STALL RECOVERY 200 FEET. FLIGHT INTO KNOWN ICING CONDITIONS PROHIBITED. THIS AIRPLANE IS CERTIFIED FOR THE FOLLOWING FLIGHT OPERATIONS AS OF THE DATE OF THE ORIGINAL AIRWORTHINESS CERTIFCATE: DAY-NIGHT-VFR-IFR. (FLIGHT OPERATIONS MUST BE DESIGNATED THE SAME AS ON THE ORIGINAL **CESSNA PLACARD FOR THE PARTICULAR AIRPLANE)** (Continuation Sheet) Number SA365NW FAA Form 8110-2 (5/14) Page 6 of 6 Limitations and Conditions: (continued from Page 5 of 6) B. Placard Pee Kay P/N 35 1255-2: WATER RUDDER ALWAYS UP EXCEPT WHEN TAXIING UP ↔ DOWN C. Pee Kay Supplemental Data 23SD2700-1, Revision (-), dated September 21, 1976, required with installations. NOTE 3: This STC is limited to those airplanes which incorporated the Cessna type design seaplane equipment for the particular model except as modified or added to by the data specified in the STC. --------------------------------------------------------- END ------------------------------------------------------ ## Every issue (3) - December 7, 2016: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/e4/7c/e47cc6716f9d80dbd93b3f399a0f9ebb552938bce6c806e8dc08352dddce42bd) - October 25, 2000: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/90/bf/90bf27b6d8fa38c6163beaf27810b614fd34624a3087401967f46925191af4a8) - October 25, 2000: Reissued and Amended, Historical. [certificate](https://openairdocs.org/files/sha256/2b/ae/2bae120be3d770ace5e1516bbcdf3dc479575f72312f3ecee61bbf2407c34a0e) --- 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.