Delta Flight 014 from Atlanta to Frankfurt turned back shortly after takeoff Friday night because of a mechanical issue with one of the plane’s engines, the airline said in a statement. “The aircraft landed safely and was met by firetrucks, which sprayed down the aircraft’s brakes due to the heavier than normal landing weight,” Delta said.

Delta Air Lines has faced a series of unsettling incidents over the past week, including smoke or haze in the cabin on two flights and a separate crash that injured more than 20 people.

A Delta flight leaving Atlanta's airport had to turn back around shortly after takeoff Friday due to a "mechanical issue," according to the airline. A spokesperson with Delta Air Lines said Delta flight 014 - which was headed to Frankfurt,