As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEVERE CORROSION WAS FOUND IN SHELF LOCATED INTERNALLY TO THE 145-155 ROLLOVER BULKHEAD ON THE LT SIDE OF THE AIRCRAFT. THE SHEETMETAL SHELF THAT SITS INSIDE OF THE ACCESS PANEL AND ACTS AS THE BOTTOM OF THE CAVITY WAS FOUND TO BE SEVERELY CORRODED. THIS AREA CONTAINED INSULATION. THE DAMAGE WAS CONTAINED TO THE SHELF AND THE FORWARD FACE OF TEH FS155 BULKHEAD.