According to the safety board report, there was water in the fuel line of one of the two engines on the 1965 Piper PA-30 Twin Comanche. A sample from the service truck at the airport found no water in the fuel.
Witnesses and surveillance camera footage indicated the plane wasn't serviced before takeoff, although another pilot told Atiyeh that he should "sump his fuel tanks and to open the fuel drains before each and every flight because the fuel caps were susceptible to allowing water to get into the fuel tanks."
Read more: http://www.arkansasonline.com/news/2015/may/08/plane-permit-a-forgery-says-u-s-2015050/
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