Boeing engine cover falls off during takeoff, prompting US investigation

Incident during Southwest flight will add to pressure on aviation firm as it shakes up leadership

US airline regulators have launched an investigation after an engine cowling on a Boeing plane fell off during takeoff and struck the wing flap, the latest in a series of safety problems facing the aircraft manufacturer.

Southwest Airlines flight 3695 rose to about 3,140 metres (10,300ft) before returning safely 25 minutes after takeoff to Denver international airport at about 8.15am local time on Sunday. It was towed to the gate after landing.