# STC SA16NW - Type: Supplemental type certificate - Status: Current, Issued - Holder: Strever, Carl W., United States - Description: Installation of Continental O-470-J Engine and McCauley 90M-8 Propeller blades and 2A36C1 Hub - Applied: October 12, 1972 - Status date: November 7, 1972 - Product: Aircraft, Small Airplane - Certification basis: Part 21 - Data sheets: [TCDS 5A5](https://openairdocs.org/tcds/5A5) - Certificate PDF: https://openairdocs.org/files/sha256/da/44/da44ce00f844597ef9f40f4a2fe851d89dca459e8a0580567dea64b7da705c95 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/97F6FE4D9E40F22086257AE1005C04A1.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA16NW ## ADs that name it (0) None. ## Approved models (1) - Regal Air Inc. 305A ([TCDS 5A5](https://openairdocs.org/tcds/5A5)) ## What the certificate says This is OCR from the scanned FAA certificate. OCR can misread letters and numbers. United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA26Nw This certificate issued to: Carl W. Strever Purt 3 of the CAR Regulations, effective 1 November 1949 as amended, by 3-1 thru 3-13. Original Product - Type bertificate Number: Make: CESSNA Model: 305A (N10442, Serial 22595) Description of Type Design Change: Installation of Continental 0-470-J Engine and McCauley 90M-8 Propeller Blades and 2A36C1 Hub. Data not suitable for reproduction in other aircraft; therefore, they are satisfactory for CESSNA 305A on a one-only airplane basis for Serial No. 22595 with registration number N10442, for the Restricted Category. Date of Application: 12 October 1972 Date Reissued: Date of Issuance: . 7 November 1972 Date Amended: FEDERAL AVIATION By Direction of the Administrator (Signature ) TO MINISTRATO Acting Chief, Encineering and Manufacturing Branch 47. United States of America Department of Transportation Federal Aviation Administration Make: 7 Nov. 1972 Supplemental Type Certificate CESSNA 305A, Serial No. 22595 (Continuation Sheet) Number 5A160W Supplemental Type Certificate ADDENDUM NO. SA16NW The conditions and limitations of the original specification apply except as follows: This Addendum, which is part of Supplemental Type Certificate No. SAl6NW prescribes conditions and limitations under which the product for which the STC was issued and meets the airworthiness requirements of CAR 3. A copy of this Addendum shall be maintained as part of the modified aircraft permanent records. Supplemental Type Certificate HOLDER: CARL W. STREVER Bayview Airport Burlington, Washington 98233 1. MODEL 305A CESSNA (Landplane only, Restricted as modified by SIC SA16NW). Engine: Continental 0-470-J Fuel: 80/87 Minimum Grade Aviation Gasoline Engine Limits: 225 HI.P. @ 2550 RPM Propeller & McCauley 90M-8 Blade/2A36C1 HUB Propeller Limits: Diameter: 82 inches maximum 80 inches minimum Static RPM: 2550 maximum Limitations: None C.G. Range: 36.9 to 39.7 @ 2100# Oil Capacity: 10 qts. Power Plant Instrument Markings: Tachometer: 2550 RPM (Red Line) Oil Temp. Gage: 225°F. (Red Line) Oil Pressure Gage: Minimum - 10 PSI (Red Lino Maximum - 60 PSI (Red Line Green Arc between 30 & 60 PSI Yellow Arc between 10 & 30 PSI Serial Numbers Eligible: No. 22595 only. Required Equipment: In addition to the equipment and applicable by the original type certificate, the items as specified below apply to this STC. 7 Nov. 1972 SA16NW Note 1. Current weight and balance report including list of equipment included in the certificate empty weight, must be in the aircraft. 30# of fuel @ STA. 4 is unusable and must be included in the empty weight. Note 2. The following placards must be displayed in full clear view of the pilot: Same as those listed Note 2.A. in Aircraft Specification No. 5A5. ## Every issue (1) - November 7, 1972: Issued, Current. [certificate](https://openairdocs.org/files/sha256/da/44/da44ce00f844597ef9f40f4a2fe851d89dca459e8a0580567dea64b7da705c95) --- 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.