As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ROLL PIN SECURING AILERON TRIM CHAIN SPROCKET TO AILERON TRIM WHEEL ASSY WORKED OUT OF SHAFT RENDERING AILERON TRIM INOPERABLE. RE-INSTLALED ROLL PIN (ITEM 14 IN CESSNA 208 IPC CHAPTER 27-10-03 FIG 02). SAFETY WIRED ROLL PIN WITH .020 INCH SAFETY WIRE (ITEM 14) AND SAFETIED REMAINING ROLL PINS IN ASSY ITEMS 2, 12 (ITEM 12 IN TWO AREAS) TO PREVENT RECURRENCE.