As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LUBRICANT IN ROLLER BEARING AT FORWARD END OF PITCH TRIM TUBE BECAME GUMMED UP AND HARDENED TO THE POINT THAT NEITHER ELECTRIC OR HAND WHEEL ACTUATION OF PITCH TRIM WAS POSSIBLE. MALFUNTION WAS CORRECTED BY REPLACING BEARING. THERE IS NO PROVISION FOR PERIODIC LUBRICATION. AIRCRAFT WAS MANUFACTURED IN 1991. (X)