As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
"CABIN ALT MESSAGE "LEFT 10TH SOV ARMED BUT NEVER OPENED, LT PACK NEVER CAME ON, DUE TO RT PACK DEFER, ACFT NEVER PRESSURIZED TRIED MULTIPLE RECYCLES, LT 10TH SOV REMAINED ARMED. RAN QRH LT 10TH REMAIN ARMED. TOOKOFF WITH APU ON BLEEDS ON APU. PROBLEM OCCURRED WHEN THE BLEED TRANSFER FROM APU ENGINE. CABIN ALT NEVER GOT ABOVE 9500. OVERWEIGHT LANDING DUE TO UNPRESSURIZED ACFT AIR RETURN. WEIGHT 48050 RATE OF DECENT, 300FPM REPLACEMED LT 10TH STAGE SOV.