What was found
ONE FUEL PUMP WAS RETURNED FOR INSPECTION/REPAIR DUE TO A FAULT AND ASSOCIATED CB TRIP FOR LT WING TANK PUMP 2. ONE OF TWO NUTS HOLDING THE HOUSING BERING ASSY TO THE STATOR CAP BECAME LOOSE. THE ASSOCIATED SCREW DROPPED INTO THE STATOR WINDING, CAUSING ARCING. THE FLAME TRAP WAS BREACHED. DUE TO THE HOLE LEFT IN THE STATOR HOUSING BY THE MIGRATION OF THE SCREW. THIS LEFT A DIRECT PATH TO THE FUEL. THE MFG HAS ALSO BEEN INFORMED. (K)