As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) NR 2 ENGINE OIL PRESSURE AND QUANTITY INDICATION BOTH SHOWED A DECREASE UPON REACHING CRUISE ALT. NR 2 ENGINE SHUTDOWN AND RETURNED TO DEPARTURE. NR 2 REDUCTION GEARBOX BEING REPLACED AND AIRCRAFT RETURNED TO SERVICE. (TC NR 20070906006)