What was found
MCN - MAJOR REPAIR - "C" - DURING C-10 CHECK THE L1 DOOR FORWARD LOWER CORNER SKIN WAS FOUND DENTED BS 312, HFEC VERFIED NO CRACKS. MAINTENANCE CUTOUT DAMAGED AREA OF SKIN, FARICATED A REPAIR DOUBLER AND FILLER, AND INSTALLED REPAIRS IAW B737-300 SRM 52-00-01, PG 203-204.