Starting in July, the big US airline will offer international service to Dubrovnik, Croatia, Athens, Greece and Reykjavik, Iceland

United Airlines will launch flights to three European countries that have lifted mandatory quarantines for visitors who can show they have been vaccinated against COVID-19

United Airlines adds US flights to three European cities

Operators must conduct a thermal acoustic image inspection of the large titanium fan blades on each engine

United Airlines flight UA328, carrying 231 passengers and 10 crew on board, returns to Denver International Airport with its starboard engine on fire after it called a Mayday alert, over Denver, Colorado, U.S. February 20, 2021.

FAA orders inspections of some Boeing 777 engines after United fire

As well as United Airlines, the PW4000 engine type was also used by Japan's ANA and JAL groups, plus South Korea's Asiana Airlines

Boeing confirms all 777s with same PW engine grounded

There were no injuries on the plane or on the ground

Residents in the Denver suburb of Broomfield found large pieces of the plane scattered around their community

United Airlines adds US flights to three European cities

FAA orders inspections of some Boeing 777 engines after United fire

Boeing confirms all 777s with same PW engine grounded

United flight suffers engine failure, scatters debris over US city

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United Airlines adds US flights to three European cities

FAA orders inspections of some Boeing 777 engines after United fire

Boeing confirms all 777s with same PW engine grounded

United flight suffers engine failure, scatters debris over US city