As the next step in the development, the flare-out and coupling units from the Devon were linked to a Smiths Type D autopilot and installed in Varsity WF417, a much larger aircraft, capable of carrying 38 people rather than 10 in the Devon. The first fully automatic approach and landing was made by WF417 on 11 November 1954 under calm and misty conditions.[24] A similar system was installed in Canberra WE189 to provide the first application of Autoland to jet-type aircraft.[25] Automatic approaches[26] and automatic landings[27] were recorded by WE189 but the development was interrupted in April 1956 when the facilities at Woodbridge, which had the only suitable leader cable installation, ceased to be available to BLEU. Development of auto-flare and automatic kicking-off drift was continued at RAF Wittering, but in September that year WE189, returning from tests at Wittering, crashed due to engine failure on an approach when returning to its base at Martlesham Heath.