On 19 February 2021, an ATR72-500 was found after a night arrival in Madrid to be missing the tread from one of its main gear tyres without the crew being aware. A search for debris on the landing runway and taxi-in route found none and the following morning, remains of the tread were seen by an aircraft departing the same runway at Palma de Mallorca. It was suspected from close inspection of the recovered debris that the tyre damage may have been initiated by undetected runway debris. The limitations of routine runway inspections even during daylight were noted.