Engine cowling on Southwest Airlines Boeing plane falls off during take-off – video

Passengers aboard a Southwest Airlines Boeing 737-800 film the engine cover falling off during take-off at Denver international airport on Sunday. US airline regulators have launched an investigation after the part came off and struck the wing flap. Flight 3695 - with 135 passengers and six crew members aboard - rose to about 10,300ft (3,140 metres) before returning safely 25 minutes later to Denver. No one was injured.