As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DIVERTED DUE TO PITCH TRIM STUCK IN THE NOSE DOWN POSITION. WILL NOT TRIM UP PAST -3.0. MASTER LINK KEEPER WAS DISCONNECTED FROM HORIZONTAL PITCH TRIM SERVO CHAIN. DURING AN INVESTIGATION, IT WAS DISCOVERED THAT WHILE THE ACFT WAS AT THE COMPLETION CENTER MASTER LINK WAS SPRUNG OPEN AT THE BEND CAUSING IT TO NOT LOCK ON FULLY WHEN INSTALLED. INSTALLED NEW MASTER LINK AND RETAINING CLIP ASSY. OPS CHECK GOOD.