Texas plane crash kills 5
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Dennis and Jack Dutton were in the pilot seats when Biffle's plane crashed on Dec. 18. The NTSB has said that Dennis Dutton needed a qualified co-pilot and that Jack was not certified.
A hiker along the Trans Catalina Trail told investigators the plane flew about 50 feet above the ridge and was never more than 100 feet above the ground about 11 minutes before the crash.