As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT FL 280 AIRCRAFT DEPRESSURIZED. DESCENDED TO 12,000 FEET AND OXYGEN MASKS DEPLOYED. TRIED UNSUCCESSFULLY TO PRESSURIZE IN MANUAL MODE. MEL 21-31-1C.REPAIRED CARGO DOOR SEAL AND DEFERRED AIRCRAFT PRESSURIZATION. RESTOWED O2 MASKS. LAX REPLACED CARGO DOOR SEAL AND PRESSURIZED AIRCRAFT. OPS CHECKS GOOD.