As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOTS REPORTED ENROUTE: STAB TRIM FAILURE WHEN MANUALLY TRIMMING UP FROM THE CAPTAINS SEAT AN AURAL WARNING FOLLOWED BY RUNAWAY TRIM. THE STABILIZER TRIM RELAY K022, PN 974.20.01.212 WAS FOUND FAULTY. IT WAS R & R USING A SERVICEABLE RELAY OF THE SAME PN. THE SYSTEM OPS CHECKED GOOD IAW AMM 12-A-27-40-00-00A-903A-A.