As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ELEVATOR TRIM BALL GRIP CAME OFF IN-FLIGHT. OWNER COMMENTED HE NOTICED RED MARKS ON HIS RIGHT PANTS LEG JUST ABOVE THE KNEE ON SEVERAL OCCASIONS. SUBMITTER SUGGESTED ALL EXTRA OWNERS CHECK THEIR TRIM KNOBS FOR LOOSENESS AS THIS IS A POTENTIALLY LIFE THREATENING DEFECT. (X)