Amateur-built AIRCAMPER N899DA accident near Newark, Ohio

Probable cause

The engine’s failure to produce full power for reasons that could not be determined.

NTSB analysis

Just before takeoff on the first flight in the plans-built airplane, the pilot taxied the airplane and ran the engine to bring it up to operating temperature. After takeoff, the airplane climbed out about 50 mph and the pilot lowered the nose to increase the airspeed to 55 mph. He stated that the airplane seemed to be "behind the power curve" and did not "seem to be producing enough power." Sound from a video of the accident flight showed engine power was consistent throughout the flight.

According to the pilot, about 150 to 200 ft above ground level, the pilot prepared for an off-field landing in a corn field when the wing tips "started to stall" and then the "left wing stalled." The pilot was unable to recover from the stall and the airplane impacted terrain; both wings separated during impact.

The pilot stated that it was likely that the timing slipped or that the mixture on the carburetor needed adjustment, but he did not know the reason for the low engine power on takeoff. A review of meteorological data revealed that the temperature and dew point at the time and location of the accident were conducive for serious icing at glide power. While carburetor icing may have built up during the extended ground run, the sound of the engine during the takeoff did not indicate a loss of power. Investigators were not able to determine the reason for the low engine rpm at takeoff because impact damage to the engine precluded functional testing.

Text from the NTSB. Open the NTSB docket for CEN19LA262 for the full record.