John Murray Karkow, the chief designer and test pilot for the ICON A5 plane Roy Halladay fatally crashed Tuesday, died while flying the aircraft in California in May.
On Wednesday, Andrew Dalton of the Associated Press reported the National Transportation Safety Board ruled the 55-year-old Karkow's death was the result of "pilot error." The NTSB is now set to investigate the details leading to the longtime MLB pitcher's crash in the Gulf of Mexico.
This article will be updated to provide more information on this story as it becomes available.