What was found
ENGINE SN 51773 WAS O/H UNDER WO 41675 ON 7/02/2010 AND INSTALLED IN POS 2. ACFT WAS OPERATED NORMALLY WITHOUT ANY INCIDENTS. ON 9/17/2010 THE ACFT RECEIVED A THOROUGH PREFLIGHT INSP ALONG WITH ENGINES RUN UP WITH NO DISCREPANCIES NOTED. 20 MINUTES AFTER TAKEOFF, THE ACFT HAD A CATASTROPHIC ENGINE FAILURE OF THE NR 2 ENGINE (SN 519773). NO OIL RESIDUE WAS NOTED ON THE ENGINE NARCELLE. ENGINE WAS REMOVED AND SENT FOR INSP. THE CREW THAT OPERATED THE ACFT INFORMED OF 2 QT OIL CONSUPTION ON THE NR 2 ENGINE.