As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ANC - FLT NR 126 - CREW REPORTED LOSS OF PRESSURIZATION DURING CRUISE, PASSENGER OXYGEN MASKS AUTOMATICALLY DEPLOYED. CREW DESCENDED AIRCRAFT TO 10,000 FEET AND SUBSEQUENTLY LANDED WITHOUT INCIDENT. FOUND A LARGE SECTION OF THE AFT LOWER CARGO DOOR SEAL MISSING. REPLACED SEAL, RESTOWED OXYGEN MASKS, PRESSURIZED AIRCRAFT AND OPERATED NORMALLY. (M)