What was found
UPON LEVEL OFF FLT LEVEL 290, AIRFRAME VIB STARTED. AT THE SAME TIME THE NR 2 ENG LIGHT CAME ON. NO OTHER LIGHTS CAME ON. RAN THE ABNORMAL PROCEDURES CHECK. THE NR 2 CHECK THROTTLE RETARDED TO IDLE AND AIRSPEED REDUCED TO 290 KTS. RETURNED TO MIA. AS AIRSPEED SLOWED BUFFET/VIBRATION EASED, UPON SWITCH OVER TO MIA CENTER STARTED A SLOW DESCENT TO 10,000 FT AND SLOWED TO 270 KTS. VIBRATION STOPPED, OPTED TO LEAVE NR 2 THROTTLE IN IDLE AND FLEW AN UNEVENTFUL APPROACH AND LANDING. INSPECTION OF THE A/C AFTER BLOCKS, FOUND THE RIGHT WING INBOARD FLYING. PANEL DELAMINATED AND A PORTION MISSING.(M)