As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 0057. ON SHORT FINAL, LEFT ENGINE WENT INTO FEATHER. ENGINE DID RECOVER AFTER TURNING THE AUTO COARSEN SWITCH OFF THEN BACK ON. R & R AUTO COURSON PRESSURE SWITCH IAW MM 61-22-10-2. PERFORMED OPERATIONAL TEST AUTO CORSENING SYSTEM MRB 612502. OPS CHECKED GOOD.