What was found
NR 2 MAIN JOURNAL THROUGH-BOLT WAS BROKEN AT TOP OF NR 2 CYLINDER. NO OTHER DEFECT NOTED. PILOT DID NOT STATE ABOUT ANYTHING TO CAUSE THIS, ALL OTHER ASSOCIATED ATTACH POINTS INSPECTED OK. ENGINE ONLY HAS 146.6 TSMOH AT FACTORY. PER SB 97-6, THROUGH-BOLTS ARE NOW REPLACED WITH NEW.