The Grade monoplane was a single-seat aircraft constructed by Hans Grade in 1909. The aircraft was first flown on 17 August 1909[1] A series of longer flights were made in September, and on October 30 Grade won the Lanz prize of 40,000 marks for the first German-built aeroplane to fly in a figure 8 round two markers a kilometre apart. Around 80 aircraft of this type were eventually built, including one that was purchased by the Japanese army and became the first aeroplane to be flown in Japan.