What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Narrative: flight 7451 was in cruise approximately 60 miles from Rapid City, SD, when the elevator trim became ineffective. The flight crew then discovered that elevator trim was jammed. The flight returned to Rapid City and landed without incident. Maintenance determined that the chain and cable assembly that is part of the autopilot/electric trim servo motor had come apart where the cable attaches to the chain. The retainer for the link that came apart was not found.
As the FAA filed it
NARRATIVE: FLIGHT 7451 WAS IN CRUISE APPROXIMATELY 60 MILES FROM RAPID CITY, SD, WHEN THE ELEVATOR TRIM BECAME INEFFECTIVE. THE FLIGHT CREW THEN DISCOVERED THAT ELEVATOR TRIM WAS JAMMED. THE FLIGHT RETURNED TO RAPID CITY AND LANDED WITHOUT INCIDENT. MAINTENANCE DETERMINED THAT THE CHAIN AND CABLE ASSEMBLY THAT IS PART OF THE AUTOPILOT/ELECTRIC TRIM SERVO MOTOR HAD COME APART WHERE THE CABLE ATTACHES TO THE CHAIN. THE RETAINER FOR THE LINK THAT CAME APART WAS NOT FOUND.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.