As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PROPELLER SLOW TO UNFEATHER, NR 2 ENGINE. REMOVED AND REPLACED NR 2 ENGINE PROPELLER PISTON SEAL REF AMM 61-10-00-960-801. FAILED ENGINE LEAK CHECK. REMOVED SPINNER & CLEANED PROP ASSY. PERFORMED APPLICABLE ENG RUNS, REF MTC 6710006 AFTER REINSTALLING SPINNER. OPS & LEAK CHECKS GOOD. DETERMINED TO BE RESIDUAL. RETURNED TO SERVICE.