As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) REMOVED CYLINDERS FOR LEAD CLEANING AND FOUND ALL 8 TAPPETS, LIFTERS, WORN AT CONTACT SURFACE OF CAMSHAFT. CAMSHAFT ALSO HAD SEVERE WEAR ON THE NR 2 EXHAUST LOBE. SUBSEQUENTLY, 1 SAMPLE CYLINDER WAS REMOVED FROM LT ENGINE AND WEAR WAS FOUND ON ALL VISIBLE LIFTERS. BOTH ENGINES REMOVED FOR REPAIR OR REPLACEMENT.