As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND CRACK ON LEFT ENGINE THRUST REVERSER UPPER DOOR INBOARD LONGERON ASSEMBLY ABOUT TWO INCHES FROM BUMPER. LONGERON ASSY IS WEAK IN MACHINED AREA WHICH IS WHERE THE CRACK IS LOCATED. SUBMITTER STATED IF THE BUMPER IS MODIFIED TO EXTEND PAST THE WEAK AREA, THE PROBLEM WILL PROBABLY GO AWAY.