NORTH Sea Aerial & General Transport, Ltd., a subsidiary of the Blackburn Aeroplane & Motor Co., Ltd., which operates a Royal Air Force Reserve Flying School at Brough, E. Yorks, has recently built an engine test room adjoining the engine repair shop and has installed a very ingenious engine test bed. Mr. T. Bancroft, Chief Engineer of the Flying School, is responsible for the design of the bed. With the exception of the brake gear, cooling fan, starting motor, switch gear and instruments the whole of the installation has been constructed by the Company.