An aerial picture of the machine in flight. New type monoplane for the royal air force. The "Westland Army Co-operation Monoplane". A new type of monoplane capable of phenomenal speed (not yet disclosed), built by Petters, Ltd., of Yeovil, Somerset, has been ordered in large numbers by the R.A.F. Special Trial Flights. It was designed, built and flown in twelve months, which is a record in specialised aircraft construction. October 15, 1936. (Photo by Sport & General Press Agency, Limited).