As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE THE NR 2 ENGINE BLEED TRIP OFF LIGHT ILLUMINATED. RAN QRC AND LIGHT REMAINED ON. DECLARED EMERGENCY AND BEGAN DECENT. PRESSURE BEGAN TO STABILIZE BELOW 30,000 FT AND EMERGENCY WAS CANCELLED AT 10,000 FT. MX REPLACED THE PRECOOLER VALVE, BLEED AIR REGULATOR AND PRSOV VALVE. OPS CHECK OK.