§ Mr. HAMMERSLEY
asked the Secretary of State for Air what proportion of the flying machines in use are of pre-1917 design?
§ Sir S. HOARE
Out of a total of 22 types of machine (excluding experimental machines) in use by the Royal Air Force to-day, there are only two which were designed prior to 1917—one a service and one a training type. The number of machines of these types at the present time represents approximately 36 per cent. of the total -number of machines.