As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAX FLIGHT NR 2304: AFTER ENGINE START, NR 1 PROP WOULD NOT COME OUT OF FEATHER. AIRCRAFT RETURNED TO BLOCK. MAINTENANCE C/W STAR OF THE NR 1 ENGINE, UNFEATHERED AND FEATHERED NR 1 PROP 4 TIMES. TIME TO UNFEATHER WAS IN LIMITS EACH TIME. REFERENCE AMM TASK 61-20-00-501-502. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.