NTSB update - 23 May 2019
https://www.ntsb.gov/investigations/...ive-update.pdf
...Runway 10 is 9,000-ft long and 200-ft wide and has a 1,000-ft displaced threshold. The runway also has a paved runway overrun area that is 1000-ft long. Investigators surveyed tire marks on and beyond runway 10, extending from the airplane’s estimated touchdown point to the embankment along the river. Light, white, landing gear tire marks were found on the pavement beginning at the touchdown point of the airplane, about 1,600 feet from the runway 10 displaced threshold, and continuing to the end of the pavement. (The touchdown point based on the tire marks is consistent with the estimated touchdown point based on initial review of the flight data recorder [FDR] data.) The tire marks also showed that the airplane touched down about 20 ft right of the runway centerline, returned to the centerline within about 1,000 ft of touchdown, then veered about 75 ft right of the centerline by the time the airplane had traveled about 6,200 ft from the runway 10 displaced threshold (about 4,600 ft from touchdown). The airplane then departed the runway surface about 60 ft right of the centerline onto the grass before striking the rock embankment...