As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SUSPECTED AUTOFEATHER - PILOTS REPORTED THAT THE LT AUTO FEATHER SYS DISENGAGED REPEATEDLY IN ALL POWER SETTINGS. MX REMOVED THE A123 PRINTED CIRCUIT BOARD, CLEANED CONTACTS, RE-INSTALLED THE A123 PRINTED CIRCUIT BOARD IAW MX INSTRUCTION 24-01. MX RAN THE ENGINES WITH THE CREW AND THE SYS OPERATIONALLY CHECKED GOOD IAW BMM 61-21-00.