 That year, he designed an eight-passenger high wing plane, the Avro 10 and a 4-passenger version, the Avro 4.In 1929, he designed the RAF trainer, the Avro Tutor, a smaller version, the Avro Cadet and an enclosed version, the Avro Commodore.This was followed by the Avro Anson, used in World War II for training crews and as transport aircraft.