What was found
FLIGHT 3076 RETURNED TO DTW DUE TO A FAILURE OF ENGINE NR 1 AIR VALVE. THE FLIGHT LANDED WITHOUT FURTHER INCIDENT. REPLACED THE AIR VALVE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FLIGHT 3076 RETURNED TO DTW DUE TO A FAILURE OF ENGINE NR 1 AIR VALVE. THE FLIGHT LANDED WITHOUT FURTHER INCIDENT. REPLACED THE AIR VALVE.