As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 860, MHT - PHL - PACK 2 FAILED ON APPROACH TO PHL. RESET IAW QRH, THE FLIGHT ATTENDANT REPORTED BURNING SMELL IN CABIN. MAINTENANCE TROUBLESHOT PER FIM 21-51-00-810-823A. RAN PACK SYSTEM FOR 45 MINUTES WITH NO DUCT DAMAGE FOUND AND NO UNUSUAL ODOR THROUGHOUT THE CABIN OR COCKPIT DETECTED. OPERATIONAL CHECK IS GOOD.