What was found
JFK - DURING CRUISE SHUT DOWN NR 4 ENGINE, S/N 4199, DUE TO DECREASING OIL QTY. FOUND OIL LEAKING IN ENGINE CORE. REPLACED NR 4 ENGINE AND ENGINE OPERATION CHECKED NORMAL. INVESTIGATION REVEALED NR 1 AND NR 2 BEARING BREATHER MANIFOLD BELLOWS PROTECTIVE SHIELD, MFG P/N 640640, WORE A SMALL HOLE IN BEARING BREATHER MANIFOLD ASSEMBLY, MFG P/N 699602. REPLACED BREATHER ASSEMBLY AND BREATHER MANIFOLD BELLOWS PROTECTIVE SHIELD. ENGINE S/N 4199 RETURNED TO SERVICE. (M)