Original sentence: After various duties she was adopted by the Air Historical Branch for future displays.PA474 was transferred to the BBMF in 1973 and is one of only two airworthy Lancasters remaining.She appeared in two films 'Operation Crossbow' and 'The Guns of Navarone'.With the end of the war with Japan PA474 entered storage and was later assigned to Photographic Reconnaissance duties with 82 Squadron in East and South Africa
Edited sentence: During the winter of 1995 the Lancaster was fitted with a new main spar to extend her flying life.During this time she appeared in two films Operation Crossbow and The Guns of Navarone.Flight Refuelling used an Avro Lincoln instead and PA474 was then transferred to Royal College of Aeronautics to be used for trials on the Handley Page laminar flow wing.Following a request from 44 Squadron the Lancaster moved to RAF Waddington for restoration back to wartime standard including fitting back the front and rear turrets.In 1964 she came under the control of the Air Historic Branch for possible display in the proposed RAF Museum.In 1975 a mid-upper turret was found in Argentina and fitted.On return from squadron service PA474 was loaned to Flight Refuelling Limited to be used as a pilotless drone.PA474 was transferred to the Battle of Britain Memorial Flight in 1973.The test wings were mounted vertically above the rear fuselage.With gun turrets removed  it was assigned to Photographic Reconnaissance duties with 82 Squadron in East and South Africa.With the end of the war with Japan the aircaft was not needed and PA474 entered storage