What was found
RT FUEL QUANTITY WENT TO "0" IN FLIGHT, AIRCRAFT RETURNED TO HOME STATION. MAINTENANCE FOUND FUEL QUANTITY TRANSMITTER FLOAT SEPERATED FROM THE TRANSMITTER. THE FLOAT ATTACH ARM BROKE OUTBOARD OF THE FLOAT WHERE IT WAS CRIMPED AND THE END PIECE, WASHER AND FLOAT SEPERATED. THE PIECES WERE FOUND INSIDE THE FUEL CELL. REPLACED THE TRANSMITTER, RESEALED THE TANK ACCESS COVER, RESERVICED, RECALIBRATED AND LEAK CHECKED SATISFACTORY.