What was found
UPON POST FLIGHT IT WAS NOTICED THE MAIN ROTOR BLADE TRIM TAB WAS SERIOUSLY DELAMINATED AND SEPARATED IN FLIGHT. THIS PROBLEM HAS OCCURRED NUMEROUS TIMES IN THE PAST. SOME OCCASIONS REQUIRED THE BLADE TO BE REMOVED AND SENT BACK TO THE MFG FOR REPAIR. AS IN THIS CASE, OTHER TIMES THE BLADE WAS ABLE TO BE REPAIRED AT OUR FACILITY IAW MM. MFG IS AWARE OF THIS PROBLEM AND STILL HAS NOT CORRECTED IT. PROBABLE CAUSE IS THE BONDING MATERIAL AND/OR THE BONDING PROCEDURE. (K)