What was found
FOLLOWING TAKEOFF, CREW UNABLE TO PRESSURIZE THE AIRCRAFT. RETURNED TO MCO AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE AVIONICS EQUIPMENT COOLING SKIN AIR OUTLET VALVE, OPERATIONAL CHECK OK.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FOLLOWING TAKEOFF, CREW UNABLE TO PRESSURIZE THE AIRCRAFT. RETURNED TO MCO AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE AVIONICS EQUIPMENT COOLING SKIN AIR OUTLET VALVE, OPERATIONAL CHECK OK.