 In the summer of 1913, the world's first heavier-than-air airline service opened in the form of a biplane flying boat named "Lark of Duluth", offering joyrides over the Duluth harbor.Not a commercial success, the flights ended later that summer when the designer of the aircraft's engine crashed it.After being purchased and used for scheduled flights in Florida, the plane returned to Duluth and other locations for passenger flights in 1914, until it was ultimately damaged in a hard landing later that year in California and pronounced unsalvageable.