As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MIA - CREW REPORTED RIGHT ENGINE VIBRATIONS ON CLIMBOUT. FLIGHT RETURNED MIA LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. DUE TO NOT ABLE TO BALANCE ENGINE AFTER FAN BLADE LUBE ENGINE CHANGE WAS DECLARED. REPLACED RIGHT ENGINE ON 04/16/2010 AT MIA. SYSTEM GROUND CHECK NORMAL OPERATION.