What was found
DURING INITIAL APPROACH TO JFK, ATC NOTIFIED OF RUBBER SECTIONS FOUND ON RUNWAY AT LCK. AFTER LANDING, FOUND CAP MISSING ON NR 6 TIRE AND NR 5 TIRE THERMALLY DEFLATED AFTER TAXI. REPLACED NR 5 AND NR 6 TIRE ASSEMBLIES PER BOEING MAINTENANCE MANUAL 32-45-01. PERFORMED BURST INSPECTION PER BOEING MM 05-51-25. BLED NRS 5, 6, 7, 8 BRAKES PER BOEING MM 32-41-00 PRECAUTIONARY.