By Isabel Goyer In a final report that is unusual in many respects, the National Transportation Safety Board (NTSB) concluded that the crash that killed well-known and highly experienced pilot Dale Snodgrass in 2021 was caused by the pilot’s failure to remove the control lock from the plane, a SIAI-Marchetti SM-1019B, before his takeoff from Lewiston-Nez Perce County Airport in Idaho. The accident sequence, which was recorded in high quality, shows the plane lifting off and the nose pitching up sharply just before at an altitude of around 80 feet. It rolled to the left, the nose dropped, and i…