As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ROUTINE SCHEDULED MAINTENANCE, THE OUTER WING TANK VENT FLOAT VALVE WAS FOUND ELONGATED AROUND THE DIMPLE IN THE FLOAT ARM BRACKET THAT HOLDS THE VALVE PLATE CAUSING THE VALVE PLATE TO BECOME DISCONECTED FROM THE FLOAT ARM ASSEMBLY. THE FLOAT VALVE ASSEMBLY WAS REPLACED WITH SERVICABLE UNIT.