What was found
BULKHEAD WAS CRACKED AT THE LT UPPER CORNER AT THE T/R GEARBOX ATTACHMENT POINT THROUGH THE UPPER ADJACENT RIVET HOLE AND BACK THROUGH THE BULKHEAD RADIUS RE-CONNECTING WITH ANOTHER CRACK PROGRESSING FROM THE ATTACHMENT POINT HOLE FORWARD TOWARD THE TOP RADIUS OF THE PART. DURING THE REPAIR OF THE BULKHEAD, DISCOVERED THE UPPER T/R BELLCRANK SUPPORT PLATE WAS LOOSE. FURTHER INVESTIGATION REVEALED THE RIVETS SECURING THE PLATE WERE LOOSE, THE WORKING RIVETS WERE REPLACED.