The incident happened around 2 p.m., and the FAA reports that none of the planes were preparing for flight at the time. A Cessna 210 and two Cessna 172s were flipped in the incident.
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Airport officials with Contra Costa County said no one was inside the planes when they toppled over, and no one was nearby. All planes have since been secured. A photo shared by Contra Costa County Fire Department showed tow planes sitting on their nose on the tarmac.
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