As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DECLARED EMERGENCY. ACFT DEPRESSURIZED SLOWLY ON DECENT THROUGH FL380. PACKS WERE IN HIGH RECIRC FAN ON. CLIMB RATE FOR CABIN SHOWED ABOUT 2500 FPM AC DECENT INITIALLY 2400 FPM THEN INCREASED TO 4500 FPM. HIGHEST CABIN ALTITUDE NOTED WAS 10,500FT, CABIN WARNING HORN SOUNDED. CABIN ALT DROPPED BELOW 10,000FT FL330 OR THERE ABOUT. FWD POBS WERE USED BY F/A'S IN FWD AIRCRAFT. R & R RT PACK AIR CYCLE MACHINE IAW MM.