What was found
HNL - AFTER TAKEOFF AT KOA PASSENGERS AND F/A HEARD LOUD BANG MID MAIN CABIN CEILING PANEL IS BUCKLED NO PRESSURIZATION PROBLEM NOTED. FOUND BLOWN DUCT AT ROWS 17 A/C TO BE FERRIED TO LAX FOR CONT REPAIR LOOSE PANELS REMOVED AND PLACARD IN CGO COMPARTMENT. AIRCRAFT INSPECTED AND FOUND IN SAFE CONDITION FOR FERRY FLIGHT FROM HNL TO LAX PER SPOTTING MSG. FERRIED TO LAX FOR DUCT REPLACEMENT. (M)