As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ACFT WOULD NOT PRESSURIZE. TROUBLESHOOTING RAN NR 3 ENGINE PRESSURIZED AC PERFORMED CABIN DECAY. CHECK IAW JRH DECAY CHECK GOOD. PERFORMED BLEED SYS CHECK IAW JRH AND SYS CHECKED GOOD. AC PRESSURIZED TO 6 PSID NORMALLY NO FAULTS NOTED. LT FWD PACK VALVE WAS R & R ON ANOTHER WRI 21-50/1932.