US issues fresh warning to airlines about using Iranian airspace

The US has issued a fresh warning to airlines to exercise caution when operating in Iran's airspace, citing concerns over military activity including an unnamed US civil operator being intercepted by fighter jets in December 2017. The updated guidance from the FAA to US operators, issued Sunday at the expiry of the prior year's advisory, said there were also military activities emanating from or transiting through Iran's airspace associated with the conflict in Syria. Tensions ramped up between Iran and the US after president Donald Trump pulled out of a landmark nuclear deal with Iran in May and reimposed sanctions on the Islamic Republic last month. Flight Service Bureau said "without seeming alarmist", the deteriorating relationship between the US and Iran must be taken into account when planning flights in Iran's airspace. <br/>