In his 1959 paper[44] John Charnley, then Superintendent of the BLEU, concluded a discussion of statistical results by saying that "It is fair to claim, therefore, that not only will the automatic system land the aircraft when the weather prevents the human pilot, it also performs the operation much more precisely". The system was approved for commercial use in 1964, and on 4 November 1964, Captain Eric Poole landed a British European Airways flight at Heathrow with visibility of 40 meters, which was the first use of the system to land a commercial flight in such severe conditions.[45]