Alitalia (AZA, Rome Fiumicino) has temporarily replaced wet-lease operator Carpatair (V3, Timisoara) on its route from Rome Fiumicino to Ancona. This follows an incident involving an ATR 72-500 of Carpatair on January 17 where the aircraft had to return back to Ancona for an emergency landing due to a problem with its airconditioning system. A similar problem had already developed on a flight on January 7 leading to another flight having to return back to Pisa. Alitalia is now temporarily using E175s of subsidiary Alitalia CityLiner (CYL, Rome Fiumicino) on the route until the cause of the incidents has been identified. Carpatair continues to operate its second ATR 72-500 on behalf of Alitalia between Rome Fiumicino and Pisa and has asked ATR - Avions de Transport Régional (EVX, Toulouse Blagnac) for assistance in the investigation of two incidents.