sentences:  Additional land was needed for a motorway service area (Heston Services), that was built in 1965 over the northern half of the 1940s aerodrome site.The terminal buildings continued to be used by the Civil Aviation Authority (CAA) until June 1978, and those buildings were demolished later that year.The last confirmed aircraft movement was a 'farewell' flight for CAA staff by Bell 206B JetRanger helicopter (G-BCWN) on 6 June 1978.