The National Transportation Safety Board said recordings from a GoPro camera found near the wreckage show the pilot and a passenger were taking flash "self-photographs" with their cellphones before the May 31 crash.
An NTSB report released Friday said the cause of the crash was probably an aerodynamic stall and that the aircraft spun into the ground:
Based on the evidence of cell phone use during low-altitude maneuvering, including the flight immediately before the accident flight, it is likely that cell phone use during the accident flight distracted the pilot and contributed to the development of spatial disorientation and subsequent loss of control.
The NTSB is assuming the pilot and passenger used cell phones during the fatal flight, as that flight was not captured on the GoPro.
KUSA and The Denver Post reported Tuesday the crash killed 29-year-old pilot Amritpal Singh and a passenger who had taken off from Front Range Airport in Adams County. The wreckage was found about a mile west of the airport.