What was found
PHL FLT 754 PHL-CDG EN ROUTE CREW THE NUMBER 1 ADIRU BECAME INOP. DUE TO PROCEDURAL ISSUES FLIGHT RETURNED TO PHL. MAINTENANCE REPLACED NUMBER 1 ADIRU.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
PHL FLT 754 PHL-CDG EN ROUTE CREW THE NUMBER 1 ADIRU BECAME INOP. DUE TO PROCEDURAL ISSUES FLIGHT RETURNED TO PHL. MAINTENANCE REPLACED NUMBER 1 ADIRU.