What was found
AIRCRAFT DID NOT PRESSURIZE AFTER TAKEOFF. MAINTENANCE INSPECTED AND SECURED DUCT FROM DUAL HEAT EXCHANGER TO ACM, OPS CHECKED GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT DID NOT PRESSURIZE AFTER TAKEOFF. MAINTENANCE INSPECTED AND SECURED DUCT FROM DUAL HEAT EXCHANGER TO ACM, OPS CHECKED GOOD.