As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GJT - FLT 82 - EN ROUTE SFO-PHL, WITH THE NR 2 PACK ON MEL, A NR 1 PACK FAULT OCCURRED. PRESSURIZATION WAS LOST AS A RESULT. FLIGHT MADE A RAPID DESCENT TO 10,000 FEET THE DIVERTED TO GJT DUE TO TERRAIN CONTRAINTS. AIRCRAFT LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED THE NR 2 PACK FLOW CONTROL VALVE. OPS CHECKED BOTH THE NR 1 AND NR 2 PACK SYSTEMS. OPS CHECKS OK. (M)