As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY DECLARED, LANDING UNEVENTFUL & ACFT NOT OVERWEIGHT. DURING DESCENT EXPERIENCED ALTERNATE TRIM MALFUNCTION. WHEN NR 2 AUTOPILOT WAS DISCONNECTED THE PITCH UP STOPPED. R & R DUPLEX ELEVATOR SERVO DRIVE IAW AMM 22-12-01 & NR 2 DFGC IAW AMM 22-01-01. ACCOMPLISHED OPERATIONAL CHECK. SYS CHECKED NORMAL.