 A third aircraft was ordered on 18 April 1945 and it was used for research into power @-@ boosted ailerons during February 1948 . The airframe was sold to Blackburn on 17 October 1949 . 
 A third aircraft was ordered on 18 April 1945 and it was used for research into power @-@ boosted ailerons during February 1948 . The airframe was sold to Blackburn on 17 October 1949 . 
A third aircraft was ordered on 18 April 1945 and it was used fir research into power @-@ boosted ailerons durin February 1948 . The airframe was sold to Blackburn on 17 October 1949 .