As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON INITIAL FLAP RETRACTION ON T/O WE ENCOUNTERED A RUNAWAY STAB TRIM. THE RUNAWAY CONTINTED EVEN AFTER FLAPS WERE UP. AUTOPILOT WAS NEVER ENGAGED. SPEED TRIM LIGHT CAME ON FOR AWHILE THAN FLASHED IN<[01] R/R'D R64 AND R384 PER AMM 27-41-00. PERFORMED DFCS BITE. NO FAULTS NOTED.