As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 PACK TRIPPED. REPLACED THE ACM IAW AMM 21-51-04. TROUBLESHOT IAW FIM 21-50 TASK 810. NO FAULTS NOTED. REPLACED PACK DISCHARGE OVERHEAT SWITCH S519 & S520. REPLACED PACK DISCHARGE SENSOR T1612 & T1619. REPLACED RAM AIR INLET ACTUATOR. PERFORMED 4 ENGINE START AND MONITORED PACK DURING ENGINE START AND POWER TRANSFER. NO FAULTS NOTED.