What was found
DURING A SCHEDULED INSPECTION AT AERO CORP IN LAKE CITY, FL, THE FOLLOWING WAS FOUND, TWO L-ANGLES CRACKED IN SIDE DORSAL FIN AT STATION 1074 BOTH APPROXIMATELY 1 INCH IN LENGTH. REMOVED CRACKED L-ANGLES FROM INTERIOR OF DORSAL FIN FS 1074, FABRICATED AND REPLACED DORSAL ATTACH ANGLES IAW SB DC9053A223 R02 AND AERO EO 97-456. REPETITIVELY INSPECT NEW ANGLES FOR CRACKS AT INTERVALSNOT TO EXCEED 2000 LANDINGS AFTER TIE ACCUMULATION OF 30,000 LANDINGS. (M)