As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF AND CRUISE, THE FUEL BOX VALVE MAKES AN UNUSUAL BUZZING NOISE WHICH CAN BE FELT IN THE CABIN. FSA 900/28-00/01 ADDRESSES THIS ISSUE. BEING THAT MFG IS UP TO A SERIES 1006 FROM THE 1002. IT WOULD APPEAR THAT THE MFG IS STILL WORKING ON AN INHERENT DESIGN ISSUE.