The privately operated Phenom 300, arriving from Milan's Malpensa Airport with a single pilot and three passengers aboard, overflew the Blackbushe aerodrome, southwest of London, before circling to a left downwind for Runway 25. Blackbushe is not a controlled airport, but it once was, and it still has an old-fashioned tower with a glass-enclosed cab, within which is a person called the AFISO, or aerodrome flight information service officer. His function is to advise aircraft of things like wind conditions and traffic, but not to issue instructions or clearances.
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