As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON LANDING THE NR 1 THRUST REVERSER WOULD NOT STOW. THE FLEXIBLE DRIVESHAFT (OUTBOARD) BECAME DISENGAGED FROM THE AIR MOTOR DRIVE ASSEMBLY. WITH ONLY ONE SIDE DRIVING THE THRUST REVERSER, THE MECHANISM COCKED AND BOUND UP. ALTHOUGH THIS PROBLEM MAY HAVE RESULTED FROM BEAR, A BETTER RETENTION METHOD MIGHT BE CONSIDERED FOR THE DRIVESHAFT.