As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THIS VERNATHERM HAD A SHAFT AND NUT ASSY THAT WAS SECURED WITH A ROLL PIN. THE SHAFT FAILED AT ROLLPIN. THE NUT, SHAFT PIECE AT ROLLPIN TRAVELED THRU THE OIL GALLY AND LODGED AT A FITTING. HIGH OIL TEMP ALERTED US TO THIS FAILURE, OIL PRESSURE WAS NORMAL.(K)