What was found
CHRONIC FLIGHT DECK NOISE. AIR LEAK FOUND AT THE AFT SIDE OF THE FIRST OFFICERS SLIDING WINDOW. REPLACED RT NR 2 WINDOW SEAL. AIRCRAFT WILL NEED TO BE PRESSURIZED AND NR 2 RT WINDOW LEAK CHECKED. LEAK CHECK IS GOOD. CABIN AIR RISER DUCTS DISCONNECTED FROM MAIN DUCT FROM AFT CABIN THRU FWD CABIN. RECONNECTED RISER DUCTS. CLEANED DISTRIBUTION DUCT AND GASPER HOUSING AND TUBES. ACP CLEANING OF CENTER DIFFUSER AND ALL GASPER TUBES AND HOUSING, MOST SCREENS WHERE CLOGGED WITH DEBRIS BEFORE CLEANING. ENTIRE ACFT CABIN NEEDS TO CLEANED. CLEANED COMPLETE CABIN DUCTING AND GASPER TUBING.