What was found
MHV - DURING AIRCRAFT SCHEDULED INSPECTION AT REPAIR STATION, FOUND CRACK IN CABIN FLOORBEAM AT FS 1080, LBL 45, STRINGER 18 FLOOR WEB. CRACK REPORTED APPROXIMATELY .75 INCH LONG. STOP DRILLED CRACK AND FABRICATED AND INSTALLED DOUBLER PER DC-9 SRM 53-01. (M)