As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) NUMBER 1 DECU FAULT APPEARED. DECU FAULT CLEARED BY RESETTING BATTERY. ON NEXT FLIGHT DECU FAULT REAPPEARED ALONG WITH NUMBER 1 ENGINE OSCILLATIONS OF 20%. COLLECTIVE POSITION TRANSDUCER REPLACED - FAULT CLEARED. (TC# 20191010017)