What was found
CREW REPORTED VIA ACARS TIRE PRESSURE 30 PSI LOWERING, CAPTAIN REPORTED IN THE MAINTENANCE LOG BOOK THAT AFTER CLIMB THE EICAS MESSAGE TIRE PRESSURE 30 PSI LOWERING WAS SHOWN, ALSO CAPTAIN REPORTED OF THIS MESSAGE TO MCC AND DESTINATION STATION, AT LAX STATION THE AIRCRAFT LANDED SAFELY. MAINTENANCE PERSONNEL OF THIS STATION PERFORMED REVISION, DETECTING THE MLG TIRE NUMBER 1 DEFLATED WITHOUT DETACHMENT OF THE FLOOR DUE TO PERFORATIONS. SO THE MLG TIRES NUMBERS 1 AND 2 WERE REPLACED IAW AMM DMC-B787-A-32-45-01-00A-520A-A AND DMC-B787-A-32-45-01-00A-720A-A, TESTED CORRECT.