What was found
AIRCRAFT WAS GROUNDED. INBOUND CAPTAIN REPORTED A VIBRATION ON CLIMBED OUT THAT WENT AWAY FOR REMAINING FLT AFTER DISCUSSING WITH CREW AND ASSESSING SEVERITY AND LOCATION OF VIBRATION. I CHOOSE NOT TO ACCEPT AIRCRAFT. AIRCRAFT WAS IN CLIMB AT MACH .80 AND A VIBRATION STARTED. CREW SLOWED 15-20 KNOTS TO ELIMINATE VIBRATION. CABIN CREW REPORTED SEVERE VIBRATION THROUGH OUT CABIN. ENOUGH TO SHAKE WATER OUTOF BOTTLES IN AFT GALLEY AND VIBRATE FA'S PDA OFF FWD GALLEY @ COUNTER EVENT LASTED ABOUT 30 SEC. ACCOMPLISED FREE PLAY INSPECTION PER JOB CARD 26T00027006, FOUND RIGHT ELEVATOR HINGE ARM BEARINGS WORN ON THE #6 AND REPLACED IT PER AMM 55-16-42.