The National Transportation Safety Board said that a pilot's continued flight into icy conditions, among other reasons, was a factor in a plane crash that killed two people in Leslie County last year.
The board also listed the pilot's improper planning and decisions during the flight as a probable cause, according to a report.
The April 27 crash in a heavily wooded, hilly part of Leslie County killed Steven J. Reardon, 68, and his wife, Beverly Ann Reardon, 59, of Woodbine, Md. The couple had been flying from Maryland to Mississippi.
There was an advisory for moderate icing conditions in the plane's flight path, the NTSB said in its report.
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It is likely that ice formed on the plane's wings and that Reardon was unable to maintain adequate air speed during his emergency descent, the board said.