What was found
MCN - MAJOR REPAIR - DURING C-16 CHECK A CRACK WAS FOUND ON STRINGER 16 R/H, AT BS 500C+4. MAINTENANCE TRIMMED OUT CRACK ON STRINGER 16 R/H AT BS 500C+4; PERFORMED HFEC INSPECTION OF CUTOUT TO VERFIY NO CRACKS EXIST; FABRICATED REPAIR CHANNEL, RADIUS FILLER, AND FILLER; INSTALLED REPAIR PARTS IAW AWA ER 03-5312-01094-DD1.