As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT ENGINE NR 4 CYLINDER CONNECTING ROD, FRACTURED AND PUNCTURED THE ENGINE CASE ABOVE NR 4 CYLINDER MOUNT FLANGE. AT ENGINE TT 4096.7 (7/17/07) THIS ENGINE WAS O/H AND MODIFIED TO 335HP IAW STC SE09104SC RAM SERIES VII. AT THAT TIME MODIFIED CONNECTING RODS PN 1162 WERE INSTALLED IAW STC SE4327SW.