As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED LEFT NLG TIRE PRESS LOW (156 PSI) ECL MSG AFTER CLIMBING OUT FROM DEPARTURE CDG. NORMAL TIRE PRESS NOTED PRIOR AND POST DEPARTURE PER AHM. L NLG TIRE PRESS SLOWLY DROPPING. REMOVED AND REPLACED LH NOSE TIRE REF AMM 32-45-02 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1963525 SN OFF 1648 IPC REFERENCE # 32-44-02