# STC SA937NW - Type: Supplemental type certificate - Status: Current, Issued - Holder: Jack E Lanning, United States - Description: Installation of a Lycoming R-680-13 (E3B) engine and Hamilton Standard 5404 Hub/11C1 blade propeller, with a Stinson V77 oil tank - Applied: February 29, 1980 - Status date: May 7, 1980 - Product: Aircraft, Small Airplane - Certification basis: Part 21 - Data sheets: [TCDS ATC 32 Curtiss-Wright](https://openairdocs.org/tcds/ATC%2032%20Curtiss-Wright) - Certificate PDF: https://openairdocs.org/files/sha256/1e/cf/1ecf9a7db0ccc152f8c122ffa5b4c4bc940028042a1fd35eb457642b3986d17a - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/ECEE981F98B8DEB986257A3F0054D354.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/SA937NW ## ADs that name it (0) None. ## Approved models (1) - Curtiss-Wright Corporation Travel Air 4000 ([TCDS ATC 32 Curtiss-Wright](https://openairdocs.org/tcds/ATC%2032%20Curtiss-Wright)) ## 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: SA937NW This certificate issued to: Jack E. Lanning Part 3 of the Civil Air Regulatins, and Aeronautics Bulletin No. 7A of the Bureau of Air Commerce. Original Product - Type tertificate Number: 32 Make: Curtiss-wright Travel Air Model: 4000 Description of Type Design Change: Installation of a Lycoming R-680-13 (E3B) engine and Hamilton Standard 5404 Hub/11C1 Blade propeller, with a Stinson V77 oil tank. in accordance with photographs 1 through 5. Limitations and Conditions: Data pertaining to this modification are considered inadequate for duplication in other aircraft. This approval is limited to the installation in Curtiss-Wright Travel Air 4000, Serial Number 972 only. A copJ of this Certificate and Addendum No. SA937NW shall be maintained as part of the permanent records for the modified aircraft. Date of Application: February 29, 1980 Date Reissued: Date of Issuance: . May 7, 1980 Date Amended: FEDERAL AVIATION harles Catchroeda (Signature ) TOMINISTRA Chief, Engineering and Manufacturing Branch (Title ) 47. United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) May 7, 1980 Number SA937NW Supplemental Type Certificate ADDENDUM NO. SA937NW The conditions and limitations of the original specification apply except as follows: This Addendum, which is part of Supplemental Type Certificate No. SA937NW, prescribes the conditions and limitations under which the product for which the STC was issued and meets the airworthiness requirements of Aeronautics Bulletin No. 7A and Civil Air Regulation Part 3. A copy of this Addendum shall be maintained as part of the permanent records for the modified aircraft. Supplemental Type Certificate HOLDER: Jack E. Lanning CURTISS-WRIGHT TRAVEL AIR 4000 3POLB (NORMAL CATEGORY) AS MODIFIED BY STC SA937NW Engine: Lycoming R-680-13 (E3B) Fuel: 80/87 minimum grade aviation gasoline Engine Limits: Maximum continuous 285 Hp @ 2200 rpm @ S.L. Takeoff (5 min.) 300 Hp @ 2300 rpm full throttle Propeller and Propeller Limits: Hamilton Standard 5404 Hub/11C1 Blade Diameter: 99 inches C. G. Range: 12 to 15.5 @ 2140 pounds 14 to 15.5 @ 2850 pounds Oil Capacity: 5 gallons Powerplant Instrument Markings: Tachometer: 2300 rpm (red line) Oil Temperature Gauge: 200 F (red line) Oil Pressure Gauge: 15 psi (red line) minimum 85 psi (red line) maximum 50 to 85 psi (green arc) normal 15 to 50 psi (yellow arc) Serial Number Eligible: 972 only Required Equipment: In addition to the equipment and applicable by orginal type certificate the items as specifiec below apply to this Sic. **FAA FORM 8110-2-1 (10-69) PAGE 3 OF 4 PAGES C FAA AC 73-2651** May 7, 1980 STC ADDENDUM NO. SA937NW NOTE 1. Current weight and balance report including list of equipment included in the certificate empty weight, must be in the aircraft. Eleven gallons of fuel are unusable and must be included in the empty weight. NOTE 2. The following placards must be installed: (A) in the rear cockpit and in clear view of the pilot: 1. FUSELAGE TANK CAPACITY 42 GALLONS USEABLE 31 GALLONS (B) on the fuel selection valve: **OFF AUX.** ON (MAIN) (C) on the fuselage tank filler cap: **VENT** FORWARD NOTE 3. Install RAM inlet tube (3/16 ID) facing forward to fuselage filler cap. NOTE 4• Mark fuel quantity indicator to show reaching 11 gallons unuseable fuel. - END - Page 4 of 4 Pages ## Every issue (1) - May 7, 1980: Issued, Current. [certificate](https://openairdocs.org/files/sha256/1e/cf/1ecf9a7db0ccc152f8c122ffa5b4c4bc940028042a1fd35eb457642b3986d17a) --- 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.