On a flight from KCQX to KRMI 10,000 ft. At some point my wife asked did I hear a noise. I hadn’t. Landed at Rocky Mount and left the plane to be refueled.. on returning to the plane I noticed this damage just aft of the door. Black smudges that would not rub off and a chip of paint gone. There is no physical damage to the hull. I cannot say if the damage happened during the flight or on the ground during refueling. Opinion of a couple of people is tha this might be caused by some type of electric discharge. Any thoughts?
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