As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NO CABIN PRESSURIZATION ON CLIMB OUT AT 5,000 FEE. THE FLIGHT DECLARED AN EMER & DIVERTED WITHOUT FURTHER INCIDENT. ACFT REMOVED FROM SERVICE. INSPECTED L1 DOOR, SEAL & ASSOCIATED HARDWARE IAW AMM 52-11-00. NO DISCREPANCIES FOUND. PRESSURIZED AS REQUIRED. SYS CHECKED GOOD.