DENVER (AP) - Federal air crash investigators say a pilot was unfamiliar with his plane's fuel system and pilot error contributed to a 2015 propeller plane crash near Eaton that left two Kansas men dead.

The National Transportation Safety Board says the pilot lost control in gusting wind and crashed because of the error.

According to the Denver Post, the plane had monitors on separate fuel tanks and the pilot failed to notice he was running out of fuel.

The pilot was identified as 35-year-old Jared Langston, of Holyrood, Kansas, and the passenger was identified as 41-year-old Benjamin Bates, of Lyons, Kansas.

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