# N11241: 1931 Waco QCF - Status: Valid registration - Airframe: [Waco QCF](https://openairdocs.org/model/waco-qcf) (registry code 9600408, 3 seats) - Engine: [Continental R670-SERIES series](https://openairdocs.org/engine/continental-r670-series-series) (registry code 17016) - Data sheets: [TCDS ATC 416](https://openairdocs.org/tcds/ATC%20416) (The Waco Aircraft Company) (OpenAirDocs) - Serial number: 3453 - Year built: 1931 - Type: Fixed wing single engine - Engine type: Reciprocating - Airworthiness: Standard, normal - Airworthiness date: October 27, 1955 - Certificate issued: March 10, 2026 - Expires: March 31, 2033 - Mode S code: A0369F - Registered owners: [Bowe Walter C Trustee](https://openairdocs.org/faa-owner/BOWE%20WALTER%20C%20TRUSTEE), [Mendieta Carlene A Trustee](https://openairdocs.org/faa-owner/MENDIETA%20CARLENE%20A%20TRUSTEE) - Location: [Sonoma, CA](https://openairdocs.org/faa-place/CA/Sonoma) - Owner type: Co-owned - Owner's area on the map: 38.2558° N, 122.4609° W: Placed by OpenAirDocs at the center of ZIP code 95476, within about 6 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=11241 - Page: https://openairdocs.org/aircraft/N11241 From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination. The registry lists only the engine series, so ADs for every Continental R670-SERIES model are included. ## ADs that may apply (OpenAirDocs): 1 in force ### Matched by airframe (Waco QCF) None in force. ### Matched by engine (Continental R670-SERIES series) - [AD 95-21-15](https://openairdocs.org/ad/95-21-15): Aviation Gasoline · Continental Motors A-65-8, C85-12F, C85-12FJ and 77 more. Effective Nov 28, 1995 ### Historical (superseded or no longer in force) - [AD 94-14-12](https://openairdocs.org/ad/94-14-12) (historical): Octane Aviation Gasoline · Teledyne Continental Motors A-65-8, C85-12, E185-11 and 68 more ## Information bulletins (advisory) None matched. ## NTSB investigations (1) From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [NTSB WPR09LA475](https://openairdocs.org/ntsb/WPR09LA475), Sep 14, 2009: Waco QCF-2 (N11241), Bend, OR, substantial damage. Probable cause: The pilot’s failure to maintain directional control during landing. Contributing to the accident was the pilot's lack of experience in the make and model airplane. ## FAA accident and incident reports (1) From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [Accident 20090914018219A](https://openairdocs.org/incident/20090914018219A), Sep 14, 2009: Waco QCF (N11241), Bend, OR, Substantial damage. On Monday, September 14, 2009, approximately 9:30 am local time, NX11241, a Waco Qcf was flying from hood river, Oregon to prescott, AZ making a scheduled fuel… ## Service difficulty reports None filed for this aircraft. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. ## STCs that may be installed (OpenAirDocs) (7) Approved for this aircraft's airframe or engine model, in force first, then newest. The registry doesn't record which STCs an aircraft has; its records do. ### Approved for the airframe (Waco QCF) - [STC SA04652CH](https://openairdocs.org/stc/SA04652CH): To allow use of 100R grade aviation fuel meeting Swift Fuel, LLC specification. Swift Fuels LLC - [STC SA00079NY](https://openairdocs.org/stc/SA00079NY): Installation of Airwolf remote mounted engine oil filter kit AFC-K008 on single and multi engine fixed wing light aircraft incorporating Teledyne Continental reciprocating engines of 450 horsepower or less. Airwolf Filter Corporation - [STC SA4503NM](https://openairdocs.org/stc/SA4503NM): Remove original cloth covering and install Ceconite covering. Ceconite Division of Poly-Fiber Inc - [STC SA02033AT](https://openairdocs.org/stc/SA02033AT): Modification to install an air-oil separator to prevent oil from being aspirated from the engine breather line. M-20 Oil Separators LLC ### Approved for the engine (Continental R670-SERIES series) - [STC SE04651CH](https://openairdocs.org/stc/SE04651CH): To allow use of l00R grade aviation fuel meeting Swift Fuel, LLC specification SPEC-l00R-22. Swift Fuels LLC. Lists R-670-B - [STC SA4005NM](https://openairdocs.org/stc/SA4005NM): Precise Flight Inc. Pulselite Control System. Precise Flight Inc. Lists R-670-B - [STC SE5879SW](https://openairdocs.org/stc/SE5879SW): Use of Phillips X/C II 20W-50 and25W-60 oil (OSS 55875) in all Avco reciprocating aircraft engines from 65 to 450 BHP. Phillips Petroleum Co ## Related - Other Waco QCF aircraft: https://openairdocs.org/model/waco-qcf/aircraft.md - The Continental R670-SERIES series engine: https://openairdocs.org/engine/continental-r670-series-series.md --- 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.