Maule BEE DEE M-4-210 N9807M accident near Cuttyhunk, Massachusetts

Probable cause

The pilot’s failure to maintain adequate airspeed after takeoff, which resulted in an aerodynamic stall and loss of airplane control.

NTSB analysis

During the takeoff climb from a private runway, several witnesses heard the airplane's engine "sputtering," but another witness heard the engine "running strong." All heard the impact; however, none observed the airplane on the departure roll or at impact. The airplane was found nose down within a row of trees about 300 feet past the steel pole.

Postaccident examination of the runway revealed tire tracks, similar in dimension as the accident airplane's tires, leading from the runway to, and slightly past, a knocked over windsock steel pole. However, the tracks were also similar to those of a vehicle on the property. Further, it could not be determined when the pole was knocked down. Subsequent examination of the airplane revealed a puncture in the right elevator in similar in dimension to the steel pole or a tree branch and long grass in the tailwheel assembly, similar to the grass near the windsock and where the airplane normally parked. Thus, the physical evidence on the airplane and near the windsock pole was inconclusive, and the investigation could not determine if the airplane struck the pole during the takeoff roll or not.

Further examination of the airplane revealed that there were no preimpact anomalies noted with the airplane or engine that would have precluded normal operation. Although trace amounts of an orange substance similar in color to lock-tite compound was located within the engine driven fuel pump, it is likely these specks were left in the solvent tank in which the pump was tested and inadvertently were drawn into the engine-driven fuel pump.

It is likely that shortly after takeoff, the airplane entered a stalled condition and subsequent spin from which the pilot could not recover due to the low altitude.

Text from the NTSB. Open the NTSB docket for ERA13LA270 for the full record.