Teenage boys learn to be wireless operator mechanics on an aeroplane.
Titles read: "THE AIR Classroom!"
Various shots of young men aged 15 and 16 years standing beside a plane in an airfield. Commentator explains they are training to become wireless operator mechanics. The boys get into the aircraft which takes off, so that they learn their trade in the conditions they will soon be working in. Each one has his own wireless set that he uses to transmit messages to a control room on the ground.