Toxicology report showed no signs of alcohol for both pilots. Prescription drugs found for the pilot; none for the co-pilot.

Performance review conclusion:

The time from the start of ADS-B data on the west side of the airport until it reached runway 15 was less than four minutes. At 09:10:16, the airplane was 700 ft before the threshold of runway 15 and at take-off power. It rotated at 09:10:32.8, 1,720 ft from the beginning of the take-off roll, and at a speed of 102 kts. It lifted off at 09:10:34 and at 09:10:40.5, the CVR recorded the sound of the slowing of the left engine propeller speed. The propeller manufacturer estimated thrust from the left propeller dropped from 2,100 lbs to less than 200 lbs while the right engine maintained more than 2,000 lbs of thrust. The airplane rolled as the left wing dropped, initially at a rate of about -5°/s. Sideslip increased rapidly to nearly 20° nose left. By 09:10:43, the airplane’s flight path was over the edge of the runway and continuing to track left while climbing. Sideslip decreased as the roll rate rapidly increased and the airplane impacted the hangar.