What was found
A/C WILL NOT HOLD PRESSURIZATION AT FL240 WITH 1 PACK. DESCENDED TO FL150 TO MAINTAIN CABIN. REPLACED PRESSURE CONTROLLER AND E/E OVERBOARD VALVE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
A/C WILL NOT HOLD PRESSURIZATION AT FL240 WITH 1 PACK. DESCENDED TO FL150 TO MAINTAIN CABIN. REPLACED PRESSURE CONTROLLER AND E/E OVERBOARD VALVE.