 The empennage was similar to that of the Roe IV, with a low-mounted D-shaped rudder behind a small rectangular fixed fin and a large triangular tailplane bearing D-shaped elevators.The undercarriage had two forward-projecting skids, each mounted with a pair of wheels on a short axle.The Type D was first flown at Brooklands on 1 April 1911, piloted not by Roe but by C.H.