 Willem-Alexander is an avid pilot and has said that if he had not been a royal, he would have liked to be an airline pilot so he could fly internationally on large-sized aircraft such as the Boeing 747.During the reign of his mother, he regularly flew the Dutch royal aircraft on trips.However, in May 2017, Willem-Alexander revealed that he had served as a first officer on KLM flights for 21 years, flying KLM Cityhopper's Fokker 70s twice a month, even after his accession to the throne.