As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A SCHEDULED INSPECTION OF THE AIRCRAFT, THE LT MAIN FUEL CELL INTERIOR WAS STARTING TO DELAMINATE. UPON REMOVAL OF THE FUEL CELL, INSPECTION OF THE INTERIOR DISCLOSED THAT CELL MATERIAL WAS PARTIALLY OBSTRUCTING THE FUEL CELL OUTLET STRAINER. SUBMITTER STATED IT IS SUSPECTED THE AIRCRAFT WAS IDLE FOR A PERIOD OF TIME WITH LESS THAN FULL FUEL.