A Vueling Airbus A320-200, registration EC-MDZ performing flight VY-1431 from Bilbao,SP to Barcelona,SP (Spain) with 114 passengers and 6 crew, departed Bilbao's runway 12 when the left engine (V2527) dropped two bonnets. In the absence of any abnormal indications and unaware of the separation the crew continued the flight to Barcelona for a safe landing.
On Nov 8th 2018 Spain's CIAIAC reported they opened an investigation into the occurrence. Although a part of the engine cowling became stuck in the left main gear, the gear retracted normally after takeoff and extended in Barcelona without problems. The aircraft received minor damage at the left main gear and the left side of the fuselage where debris hit, however all persons on board disembarked normally, no medical attention was needed.
Fotos en el link: http://avherald.com/h?article=4c0038ea&opt=0