What was found
REF EO 8-5510-7-3312 PT 4, RT HORIZ STAB, FWD SPAR, UPPER CHORD, FWD TANG CRACKED AT 2ND HOLE I/B OF CLOSING RIB PLANE. CRACK MOVES AFT FROM HOLE .375 INCH. TRIMMED OUT CRACKED AREA PER SRM 55-20-00, FABRICATED DOUBLER, FILLER, SHIM PER SRM 55-20-00. INSTALLED DOUBLER PER SRM 55-20-00.