All Nippon Airways, ANA for short and also known as Zennikkū (全日空)is a Japanese airline that is based at Tokyo Narita International Airport (NRT) and Haneda Airport (HND). The airline offers both domestic and international flights and serves destinations from countries across Asia, Europe, North America and Oceania. Overall, the airline flies to more than 120 destinations. ANA was founded as Nippon Helicopter in 1952, offering helicopter flights only. In 1955, the airline received its first jet airliner (Douglas DC-3) and rebranded as All Nippon Airways in the years following. The airline expanded its domestic route network over the next three decades and launched its first international flights in 1986 with a flight from Tokyo to Guam. Today, ANA is the largest airline in Japan by both destinations flown to and passengers served by year. The airline has a number of wholly-owned and partly owned subsidiaries, including Air Japan, ANA Wings, Air Do, Peach Aviation, Vanilla Air, Philippine Airlines and Vietnam Airlines. The airline has been receiving 5-star rating for the 7th consecutive years since 2013.