Beech 95 B55 (T42A) accident near Broadus, Montana, September 17, 2016

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

The airline transport pilot and his passengers departed on a personal cross-country flight and flew southeast toward their destination. Radar tracking indicated that after departure, the airplane attained an altitude of about 5,600 ft mean sea level (msl) in about 13 minutes. Radar data became intermittent; however, when radar contact was reestablished several minutes later, the airplane tracking was consistent with the course and altitude of the flight. The last data tracks identified the airplane at 5,800 ft msl. The wreckage was located on flat open land at an elevation of 3,751 ft about 58 miles southeast from the last radar return. There were no witnesses to the accident, and no significant weather was in the area at the time of the accident. Ground signatures and an examination of the airframe revealed evidence that the airplane collided with the ground in a nose-low near vertical attitude. Damage signatures and a teardown examination revealed that the propeller damage for both the left and right-side propeller assemblies was similar with the physical damage indicating rotation with power on at the time of impact. Postaccident examinations of the airframe, engine, and propellers revealed no discrepancies that would have precluded normal operation. The reason for the departure from cruise flight and the loss of control could not be determined from the available evidence.

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.