As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AFTER GROUND RUN, THE PROPELLERS WERE PULLED THROUGH BY HAND TO AID COOLING. AN UNUSUAL NOISE WAS HEARD ON NR 2 ENGINE. ENGINE TORN DOWN AND THE RIVETS IN THE 2ND TURBINE WHEEL WERE FOUND LOOSE ALLOWING THEM TO TOUCH THE 3RD STATOR. NO DAMAGE WAS SUSTAINED BY STATOR, BUT THE 2ND STAGE TURBINE WHEEL HAD TO BE REPLACED. PART TC: 3,143.