# Accident 20170620009419A: Aeronca 7BCM, Mahnomen, MN, June 20, 2017 - Type: FAA accident report (Accident/Incident Data System), as reported - Date: June 20, 2017, 20:30 local time - Place: Mahnomen, MN - Airport: Mahnomen County - Damage: Destroyed - Phase of flight: Takeoff: Departure Roll - Operating rules: General operating rules (Part 91) - Location: 47.2672° N, 95.9203° W: From the FAA - Nearby events: https://openairdocs.org/map.md?lat=47.2672&lon=-95.9203&mi=10 - Aircraft: N2558E, registered now (https://openairdocs.org/aircraft/N2558E) (OpenAirDocs) - Registry model: Aeronca 7BCM (registry code 2110106, https://openairdocs.org/model/aeronca-7bcm) (OpenAirDocs) - Registry engine: Continental C85 series (registry code 17008, https://openairdocs.org/engine/continental-c85-series) (OpenAirDocs) - Reported make and model: AERONCA 7BCM - Reported engine: CONT MOTOR C85 SERIES - People aboard: 1 - Fatal injuries: 0 - Other injuries: 1 - Pilot certificates: Sport pilot - Pilot flight hours: 167 total, 167 in this make and model - NTSB investigation: [NTSB CEN17LA238](https://openairdocs.org/ntsb/CEN17LA238) (OpenAirDocs) - FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/) - Page: https://openairdocs.org/incident/20170620009419A ## Narrative As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^. A 3.5 HOUR FLIGHT HAD TAKEN PLACE IN THE MORNING OF 6/20/2017 WITH NO ISSUES OBSERVED. IN THE AFTERNOON OF 6/20/2017 THE PILOT, ^PRIVACY DATA OMITTED^, DECIDED TO TAKE A LOCAL FLIGHT TO CHECK HIS FIELDS SINCE THE WEATHER WAS SO NICE. THE AIRCRAFT WAS FUELED UP AT THE DEPARTURE AIRPORT AND A PREFLIGHT WAS CONDUCTED PRIOR TO TAKEOFF. THE PILOT PERFORMED A MAG CHECK AND PRE TAXI RUNUP WAS NORMAL. DURING ROLL OUT ON RUNWAY 35 THE PILOT NOTICED THE ENGINE WAS ONLY MAKING APPROX 2200 AND HE COULD NOT GET IT TO PRODUCE ANY MORE POWER. ^PRIVACY DATA OMITTED^ DECIDED TO TAKE OFF BUT THE AIRCRAFT WAS BARELY PRODUCING ENOUGH LIFT, WHEN HE ATTEMPTED MANEUVERS TO RETURN TO THE AIRPORT THE AIRCRAFT STALLED, AND IMPACTED THE GROUND AT A NEARLY VERTICAL ANGLE. ON SCENE WITNESSES STATED THE AIRCRAFT WAS BARELY OFF THE GROUND AND SLOW.THE PILOT STATED THAT "THE AIR WAS HEAVY AND JUST DID NOT SEEM TO BE GETTING LIFT" THE AIRCRAFT WAS DESTROYED AND THE PILOT SUFFERED SERIOUS INJURIES INCLUDING BROKEN RIBS, BOTH BROKEN ANKLES, SEVERED FINGERS, SHATTERED ELBOW. HE HAS HAD SEVERAL SURGERIES STEMMING FROM THESE INJURIES. INSPECTION OF THE AIRCRAFT REVEALED THAT THE CARBURATOR PRIMER SYSTEM HAD BEEN DISABLED DUE TO THE INSTALLATION OF A DIFFERENT MODEL CARBURATOR. THE CAPPED FUEL LINE FROM THE PRIMER TO THE INTAKE MANIFOLD HAD A VERY LOOSE CAP WHICH WOULD MAKE FOR A LEANER MIXTURE. THE DENSE HUMID AIR AND THE INTAKE LEAK WERE CONTRIBUTING FACTORS THAT STRONGLY INFLUENCED THE OUTCOME OF THIS FLIGHT. ## The NTSB's investigation of this event (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 CEN17LA238](https://openairdocs.org/ntsb/CEN17LA238), Jun 21, 2017: Aeronca 7BCM (N2558E), Mahnomen, MN, substantial damage. Probable cause: The pilot’s failure to abort the takeoff after recognizing a partial loss of engine power during the takeoff roll and his subsequent inability to maintain adequate airspeed during a turn to avoid… 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. For accidents, the NTSB's own investigation is the fuller record. --- 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.