As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT ENGINE BLEED OVERHEAT, FOLLOWED BY LT PACK OFF AND LT BLEED OFF, FOLLOWED CHECK LIST. EMERGENCY DECLARED. REPLACED THE NR 1 ENGINE FAN AIR TEMP SENSOR IAW AMM 36-11-17. RAN HIGH POWER RUN AND PERFORMED AMM 36-00-3 NO LEAKS NOTED NO FAULTS NOTED IN THE AIR SUPPLY SYSTEM..