As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APPROX 15 MINUTES INTO FLIGHT, AFCS DEGRADE CAUTION LIGHT ILLUMINATED WITH ASSOCIATED FAULT CODE AFCS COLL TRIM 008. COLLECTIVE TRIM "BEEP SWITCH" WOULD NOT MOVE COLLECTIVE LEVER UP OR DOWN. ASSOCIATED EMERGENCY PROCEDURE PERFORMED AND AFCS DEGRADE CAUTION LIGHT WOULD NOT EXTINGUISH. RTB.