As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A/C UNABLE TO MAINTAIN PRESSURIZATION CLIMBING THROUGH FLT LEVEL 300. DESCENDED TO FLT LEVEL 190, FOUND RT PACK INOP. OFF LANDED IN ABQ DUE TO NOT ENOUGH FUEL TO REACH DFW AT FTL LEVEL 190. FOUND RT PACK VALVE STUCK IN CLOSED POSITION. REPLACE VALVE, OPERATION NORMAL.