What was found
RT HYDRAULIC INTERCOSTAL (LUNCHBOX PAN) IS CRACKED AT THE CASE DRAIN LINE IN THE AFT CARGO BAY AT FS 1082. STRESS FATIGUE AT THE RADIUS OF THE PAN. RECOMMENDATION: REMOVED UNSERVICEABLE LUNCH BOX PAN (PN MM670-365-002, LOCATED AND DRILLED NEW SERVICEABLE LUNCH BOX PAN (PN MM670-36511-002), AND INSTALLED SERVICEABLE LUNCH BOX PAN IAW CRJ SRM 51-42-21, 51-42-06, AND THE CRJ AMM 51-23-00. PRESSURIZATION LEAK CHECK OF THE LUNCH BOX PAN IS GOOD IAW CRJ700 AMM 21-31-00-910-801-A01. (EA09200401239)