This is being discussed on avherald:
Accident: Ryanair B738 and American B763 at Barcelona on Apr 14th 2011, both aircraft departed despite ground collision and passenger complaints
An American Airlines
Boeing 767-300, registration N366AA performing flight AA-67 from Barcelona,SP
(Spain) to New York JFK,NY (USA), had taxied to the holding point runway 25L and
was holding short of the runway.
A Ryanair Boeing 737-800, registration EI-EKB performing
flight FR-8136 from Barcelona,SP (Spain) to Ibiza,SP (Spain) with 169 passengers
and 6 crew, was taxiing along Barcelona's taxiway K for departure from runway
25L and was maneouvering to pass behind the Boeing 767-300.
A number of passengers on board of the Boeing 737-800
observed the right hand wing of the aircraft contact the tailplane of the Boeing
767-300 and rose out of their seats attracting the attention of a flight
attendant. A passenger told the flight attendant, that their aircraft had hit
the aircraft besides them. The flight attendant contacted the purser, who
instructed her to contact the flight deck, she contacted the flight deck and
informed the captain that passengers had seen their aircraft had hit another
aircraft. The captain responded however everything was fine and she continued with the takeoff about 2 minutes after the Boeing 767.