What was found
AIR INTERRUPT, RETURNED & EMER DECLARED. LANDING UNEVENTFUL & ACFT OVERWEIGHT. DURING CLIMB AN AIRFRAME VIBRATION FELT ON THE RT SIDE OF THE CABIN FROM ROW 9 FWD TO THE COCKPIT. PERFORMED TSM 05-50-00 INSPECTED WING ROOT, LG DOORS, FLAP PLAY & FLIGHT CONTROLS. PRESSURIZED INTENSITY WITH IN NORMAL RANGE OF TEST FLIGHT CREW. PERFORMED THE FCF TO DIAGNOSE THE VIBRATION & NOISE. NO ABNORMAL NOISE OR VIBRATION NOTED.