 Delayed by the late delivery of its propeller , the first prototype was rolled out at Brough in February 1947 and then taken by road to RAF Leconfield where it made its maiden flight on 1 April that year . All three prototypes were completed by the end of September and the third prototype had been modified to reduce the outer @-@ wing dihedral to 3 degrees . Both the second and third prototypes remained unflown when the Ministry of Supply ordered that flying be ceased and work on the aircraft be stopped . Later in the month , however , the third prototype was allocated to tests of powered aileron controls , as testing of the first prototype had shown that while adequate at cruise speed , the ailerons were heavy both at low and high speed . The second prototype was allocated to structural testing . 
 Delayed by the late delivery of its propeller , the first prototype was rolled out at Brough in February 1947 and then taken by road to RAF Leconfield where it made its maiden flight on 1 April that year . All three prototypes <a href='uninflect' title='1'><mark>were</mark></a> completed by the end of September and the third prototype <a href='been_done' title='2'><mark>had</mark></a> been modified to reduce the outer @-@ wing dihedral to 3 degrees . Both the second and third prototypes remained unflown when the Ministry of Supply ordered that flying be ceased and work on the aircraft be stopped . Later in the month , however , the third prototype was allocated to tests of powered aileron controls , as testing of the first prototype <a href='been_done' title='3'><mark>had</mark></a> shown that while adequate at cruise speed , the ailerons <a href='uninflect' title='4'><mark>were</mark></a> heavy both at low and high speed . The second prototype was allocated to structural testing . 
Delayed by da late delivery of its propeller , the first prototype was rolled outt at Brough in February 1947 and then taken by road to RAF Leconfield where it made its maiden flight on 1 April dat year . alll three prototypes was completed by the end of September and the third prototype done been modified to reduce the outer @-@ wing dihedral to 3 degrees . Both tdasecond and third prototypes remained unflown when the Ministry of Supply ordered that flyin be ceased and work on the aircraft be stopped . Later in the month , however , thdahird prototype was allocated to tests of powered aileron controls , as testing of thedarst prototype done shown that while adequate at cruise speed , the ailerons was heavy both at low and high speed . The second prototype was allocated to structural testing .