As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ABOUT ONE HOUR INTO FLIGHT, AT FL360. RECEIVED A LEVEL 1 "TIRE PRESSURE LOW" ALERT LIGHT SHOWED AMBER AT 79 PSI RT NR SHOWED ALTERNATING WHITE AND AMBER. EMERGENCY DECLARED. R & R LT NOSE WHEEL PRESSURE TRANSDUCER IAW AMM 32-46-04-801. OPS CHECK GOOD. THIS CLEARS M485819.