DERBY, Kan. (AP) —  A new report says a plane crash that killed a California traveling pastor and his longtime pilot in 2013 near Derby was the result of the pilot attempting to navigate icy conditions with malfunctioning controls.

The National Transportation Safety Board report also says 49-year-old pilot Mitchell Morgan had reported problematic equipment to maintenance in another state after arriving in Wichita. Personnel replaced one of the faulty instruments before the flight, but no other work was performed on it at the time.

The report says Morgan likely became disoriented as he attempted to maneuver and maintain control after an air traffic controller gave him altered flight instructions.

The crash killed Morgan and 72-year-old Ed Dufresne, who was a pastor in Murrieta, California.

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Associated Press information from: The Wichita Eagle