Revealed on the link below, that in May 2011 a Ryanair B738, whilst taxying for departure 25L at Barcelona had a ground collision with a stationary aircraft. The crew of the other aircraft were unaware there was a collision, and both aircraft flew to destination without being examined.
Incident: Ryanair B738 and American B763 at Barcelona on May 27th 2011, both aircraft departed despite ground collision and passenger complaints