What was found
CLE FLIGHT NR 2541, CREW REPORTED AIRCRAFT WOULD NOT PRESSURIZE. AIR RETURN. MAINTENANCE INSPECTED FOUND AIR SERVICE CHECK VALVE DOOR BROKEN. DOOR ASSEMBLY REMOVED AND REPLACED. ALL OPERATIONAL CHECKS REPORTED GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
CLE FLIGHT NR 2541, CREW REPORTED AIRCRAFT WOULD NOT PRESSURIZE. AIR RETURN. MAINTENANCE INSPECTED FOUND AIR SERVICE CHECK VALVE DOOR BROKEN. DOOR ASSEMBLY REMOVED AND REPLACED. ALL OPERATIONAL CHECKS REPORTED GOOD.