The National Transportation Safety Board has released a preliminary report on the deadly plane crash that claimed four lives in Bellevue.
62-year-old Glenn Mull was piloting the twin-engine plane when it went down on February 3rd.
Mull, his wife, 63-year-old Elaine Mull; their daughter, 40-year-old Amy Harter; and their granddaughter, 16-year-old Samantha Harter, died in the crash.
The family was flying to Nashville for a cattle industry convention at the time.
Investigators say the plane had undergone routine maintenance by mechanics at the Clarence E. Page Municipal Airport, which included a 150-hour periodic inspection.
The aircraft veered off-course on its final descent into John C. Tune Airport and crashed into the Bellevue YMCA.
Authorities say the plane hit the ground from an inverted position.
Radar was lost and the pilot did not make any distress calls prior to the accident.
Neither of the plane's engines showed signs of catastrophic failure.
Investigators are still holding the engines and airframe for closer inspection.
The NTSB report notes that the information is preliminary and subject to change.
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