MADRID — On Monday, Air Canda's Toronto-bound Flight 837 had to request an emergency landing almost immediately after taking off from the Barajas International Airport in Madrid.<br /><br />The Associated Press reports that the Boeing 767 had a ruptured tire and that one engine had failed.<br /><br />Citing a Spanish civil aviation official, AP reports that the landing gear did not fold up properly and a piece of it may have been ingested by the engine, causing damage.<br /><br />According to the Spanish edition of The Local, the Spanish air force scrambled an F-18 to escort the Boeing and help assess the damage.<br /><br />AP reports that the commercial jet circled over Madrid for nearly four hours to burn off fuel until it was light enough to attempt a landing.<br /><br />Shortly after 7:10 p.m., the Boeing 767 made a safe landing back in Barajas with no injuries to the 128 passengers and eight crew on board.