Amateur-built CH701 accident near Albrightsville, Pennsylvania, October 15, 2016

The NTSB's narrative final · quoted from the NTSB record

The private pilot of the experimental amateur-built airplane reported that the airplane had been flying uneventfully for about 40 minutes when it lurched and the engine experienced a partial, then total, loss of power. He placed the carburetor heat control to the high setting and established the airplane's best glide airspeed. The pilot then attempted to restart the engine. Although it initially started, the engine would not develop power and shut down after a few seconds. Two additional restart attempts were also unsuccessful, and the pilot subsequently performed a forced landing into trees. Postaccident examinations of the airframe and engine, which included an engine test run, did not reveal evidence of preimpact mechanical failures or malfunctions, and there was sufficient fuel onboard at the time of the accident. Although the weather conditions at the time of the accident were conducive to serious carburetor icing at glide power, the engine was operating at a cruise power setting at the time of the power loss and the pilot applied carburetor heat at the first indication of a problem, which did not restore engine power. Therefore, the investigation was unable to determine the reason for the total loss of engine power.

The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.