What was found
(CAN) A DIFFERENTIAL FLAP CONDITION WAS NOTED ON DURING TAKEOFF, THE ACFT LANDED AT THE MX FACILITY AND FURTHER INVESTIGATION REVEALED THE FOLLOWING: LOWER BULKHEAD ASSY 0512133 WAS TORN WERE RT FLAP BRACKET 0512128 INBD UPPER ATTACH POINT IS SECURED TO THE 0512133 BULKHEAD. THE FAILURE/DAMAGE OF THE FLAP BRACKET 0512128 IS A FAIRLY COMMON ITEM THAT IS SPECIFICALLY INSPECTED DURING THE INSPECTION PROCESS. THE UNUSUAL SITUATION HERE IS THAT THE PRIMARY SUPPORT BULKHEAD FAILED AND THE FLAP BRACKET WAS IN A SERVICABLE CONDITION AT THE TIME OF THE EVENT. A MFG REPAIR SCHEME HAS BEEN OBTAINED FROM THE MFG TO ADDRESS THIS ISSUE.