As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN THROTTLES WERE CLOSED FOR SHUT DOWN, NR 2 ENGINE'S N2 NEEDLE ON TRIPLE TACH WAS OBSERVED TO REMAIN WITH THE ROTOR NEEDLE DURING COAST DOWN WHILE NR 1 ENGINE'S N2 NEEDLE SPLIT AND DECELERATED NORMALLY. FOUND NR 1 FWU CLUTCH LOCKED UP IN EITHER DIRECTION (NO FREEWHEELING CAPABILITY). REMOVED RIGHT FWU, FOUND CLUTCH BROKEN IN SEVERAL PIECES.