What was found
NR 2 ENGINE WOULD NOT UNFEATHER AFTER START. INTERROGATED CDS NO CODES FOUND IAW AMM 61-20-00-710-804. R & R OSG IAW AMM 61-20-26-000/400-801 NO HELP. LEAKAGE NOTED AT OSG. REMOVED OSG IAW AMM 61-20-26-00-801. REINSPECTED AND CLEANED SURFACE NO OBSTRUCTION FOUND. INSTALLED OSG IAW AMM 61-20-26-400-801 NO HELP LEAK PERSISTS. CHECKED HUB GREASE LEVEL IAW AMM 61-10-640-501 LEVEL GOOD. REPLACED OSG AGAIN IAW AMM 61-20-26-000/400-801 OPS CHECKED GOOD, LEAK STILL PRESENT. CLEANED ALL REMAINING COATING OFF RGB PRIOR TO INSTALLATION DID NOT HELP LEAK. OPEN.