As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE IN HEAVY MAINTENANCE IS WAS NOTED THAT LT OTBD END OF THE OTBD AILERON TAB IS DELAMINATED. DAMAGE WAS REMOVED APPROX DIM 2 INCH BY 4.5 INCH. FABRICATED CORE FROM 5052-44-3/16 DIM 2 INCH BY 4 INCH, HOT BONDED CORE. FABRICATED FILLER FROM 2024 T3 .012 INCH DIM 2.5 INCH BY 4.5 INCH AND DOUBLER FROM 2024-T3 .012 INCH DIM 4 INCH BY 6 INCH. HOT BONDED REPAIR. NO OTHER DEFECTS WERE NOTED. AIRCRAFT WAS RETURNED TO SERVICE.