What was found
AIRCRAFT WAS GROUNDED AFTER TAKE OFF AIRCRAFT WOULD NOT PRESSURIZE, AIRCRAFT RETURNED TO ORD WHERE IT LANDED SAFELY WITH OUT FURTHER INCIDENT. (NO EMERGENCY WAS DECLARED) **SUPPLEMENTAL REPORT WILL BE SUBMITTED** (OPEN)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT WAS GROUNDED AFTER TAKE OFF AIRCRAFT WOULD NOT PRESSURIZE, AIRCRAFT RETURNED TO ORD WHERE IT LANDED SAFELY WITH OUT FURTHER INCIDENT. (NO EMERGENCY WAS DECLARED) **SUPPLEMENTAL REPORT WILL BE SUBMITTED** (OPEN)