What was found
MID CABIN FLIGHT ATTENDANTS NOTICED VIBRATION ON RIGHT SIDE OF AIRCRAFT JUST PRIOR TO TAKEOFF. ALSO MADRID TOWER REPORTED RUBBER ON RUNWAY. FOUND NR 3 TIRE TREAD SEPARATED FROM TIRE. AIR PRESSURE OK. REMOVED AND REPLACED NR 3 TIRE. PERFORMED TIRE TREAD LOSS CONDITIONAL INSPECTION PER 05-51-16-212-014. DURING INSPECTION FOUND 3 CLAMPS ON RT GEAR HARNESS BROKEN AND 1 PANEL SUPPORT BENT IN RT WHEEL WELL. AWAITING REPAIR INSTRUCTIONS OR ERA.