What was found
FLT 41 JFK-MCO, PUTRID ODOR COMING FROM AIR VENT AT CABIN ROWS 15 AND AFT, STRONGEST ODOR FROM AFT GALLEY GASPER AIR VENT. FOUND AT LAV 'D', THE AIR OUTLET SUPPLY LINE AND THE WASTE WATER DRAIN LINES TO BE INSTALLED BACKWARDS, INSTALLED CORRECTLY AND DRAINED RESIDUAL WATER FROM DUCTING AS REQUIRED. OPS CHECK OK.