WWI Gosport System Helmet

Communication between a flying student and instructor was difficult to achieve over the engine noise and open cockpit. The British flying school at Gosport, England developed a device whereby the instructor shouted into a funnel-like arrangement having a rubber tube divided by a "Y" which connected to ear pieces in the student’s helmet. This device became known as the “ Gosport Tube" and most American pilots trained under the Gosport System.