# N14139: 1934 Waco YKC - Status: Valid registration - Airframe: [Waco YKC](https://openairdocs.org/model/waco-ykc) (registry code 9600816, 5 seats) - Engine: [Jacobs L4 /R755-7](https://openairdocs.org/engine/jacobs-l4-r755-7) (registry code 35003) - Data sheets: [TCDS A-533](https://openairdocs.org/tcds/A-533) (The Waco Aircraft Company) (OpenAirDocs) - Serial number: 4219 - Year built: 1934 - Type: Fixed wing single engine - Engine type: Reciprocating - Airworthiness: Standard, normal - Airworthiness date: January 25, 1951 - Certificate issued: March 1, 2005 - Expires: March 31, 2030 - Mode S code: A0A94A - Registered owner: [James Roger L](https://openairdocs.org/faa-owner/JAMES%20ROGER%20L) - Location: [New Carlisle, OH](https://openairdocs.org/faa-place/OH/New%20Carlisle) - Owner type: Individual - Owner's area on the map: 39.9561° N, 84.0090° W: Placed by OpenAirDocs at the center of ZIP code 45344, within about 5 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=14139 - Page: https://openairdocs.org/aircraft/N14139 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. ## ADs that may apply (OpenAirDocs): 0 in force ### Matched by airframe (Waco YKC) None in force. ### Matched by engine (Jacobs L4 /R755-7) None in force. ## 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 CEN20CA280](https://openairdocs.org/ntsb/CEN20CA280), Jul 14, 2020: Waco YKC (N14139), New Carlisle, OH, substantial damage. Probable cause: The pilot's failure to maintain proper approach speed and descent path to the runway, which resulted in excessive speed at touchdown and insufficient runway remaining to safely bring the airplane to… ## 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 20200714017809A](https://openairdocs.org/incident/20200714017809A), Jul 14, 2020: Waco YKC (N14139), New Carlisle, OH, Substantial damage. On Tuesday, July 14, 2020, at approximately 0730 EDT, a Waco aircraft company Ykc aircraft, registration n-number N14139, was involved in an accident when it… ## 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) (14) 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 YKC) - [STC SA04652CH](https://openairdocs.org/stc/SA04652CH): To allow use of 100R grade aviation fuel meeting Swift Fuel, LLC specification. Swift Fuels LLC - [STC SA01757WI](https://openairdocs.org/stc/SA01757WI): To allow the use of UL91 or UL94 (minimum) grade aviation fuel. Swift Fuels LLC - [STC SA01967WI](https://openairdocs.org/stc/SA01967WI): Use of GAMI G100UL High Octane Unleaded Avgas. General Aviation Modifications Inc - [STC SA04776NY](https://openairdocs.org/stc/SA04776NY): The HIPEC Covering and Finishing System must be performed and maintained. HIPEC Aircraft Coatings Inc - [STC SE02712SE](https://openairdocs.org/stc/SE02712SE): Installation of the Oil Scavenging Pump System for Jacobs L-4 and R-755. Henry F. Rogers - [STC SA01831WI](https://openairdocs.org/stc/SA01831WI): To allow the use of UL91 (minimum) grade aviation fuel. Petersen Aviation Inc - [STC SA02268CH](https://openairdocs.org/stc/SA02268CH): Installation of Airwolf Filter Corp. Air Oil Separator. Airwolf Filter Corporation - [STC SA01406NY](https://openairdocs.org/stc/SA01406NY): Installation of Airwolf remote mounted engine oil filter kit AFC-K017 on single and multi-engine fixed light aircraft and rotary wing. Airwolf Filter Corporation - [STC SA2586NM](https://openairdocs.org/stc/SA2586NM): Installation of J.P. Instruments temperature monitoring systems. J P Instruments - [STC SA02428SE](https://openairdocs.org/stc/SA02428SE): Installation of an Air Stream Switch for an electric time recording device on non-pressurized aircraft. Henry F Rogers/David E Polley - [STC SA00478CH](https://openairdocs.org/stc/SA00478CH): Installation of Cooper Superflite 102 Fabric. Aviation Products Systems Inc - [STC SA00432SE](https://openairdocs.org/stc/SA00432SE): Installation of EGT 701 series fuel flow instrument. J P Instruments - [STC SA00861SE](https://openairdocs.org/stc/SA00861SE): Installation of J.P. Instruments (JPI) fuel flow indicating system. J P Instruments - [STC SA2432CE](https://openairdocs.org/stc/SA2432CE): Operation of airplane on unleaded automotive gasoline 87 minimum anti-knock index and leaded automotive gasoline, 88 minimum antiknock index (RON+MON)/2. Petersen Aviation Inc ## Earlier aircraft with N14139 The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N14139 before. - [Cancelled 1971-08-24](https://openairdocs.org/deregistered/N14139-1971-08-24): Piper PA-23-250, S/N 27-4706, built 1971. Exported to Netherlands. Owner: [Aviation Services Intl Inc](https://openairdocs.org/faa-owner/AVIATION%20SERVICES%20INTL%20INC), [Lock Haven, PA](https://openairdocs.org/faa-place/PA/Lock%20Haven) ## Related - Other Waco YKC aircraft: https://openairdocs.org/model/waco-ykc/aircraft.md - The Jacobs L4 /R755-7 engine: https://openairdocs.org/engine/jacobs-l4-r755-7.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.