As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOTS REPORTED THAT THE AUTOFEATHER SYSTEM ENGAGED AND CYCLED IN FLIGHT ON FINAL WITH PROPS FULL FORWARD AS POWER WAS REDUCED TO JUST JUNDER 1000 LBS TORQUE ON NR 1 ENGINE. MAINTENANCE REMOVED AND REPLACED THE LOW PRESSURE SWITCH IAW BMM 61-21-01. OPERATIONAL CHECK WAS GOOD ON GROUND.