https://peertube.dngr.us/videos/watch/6f613af4-ed5b-467f-9ab9-299b10f6b5e4 Join this channel to get access to perks: https://www.youtube.com/channel/UCddem5RlB3bQe99wyY49g0g/join Want to learn more about Periscope Film and get access to exclusive swag? Join us on Patreon. Visit https://www.patreon.com/PeriscopeFilm Visit our website www.PeriscopeFilm.com This training film "Approaches and Landings in Low Visibility By Day" was apparently made by the Blind Landing Experimental Unit, or BLEU, which was formed at RAF Woodbridge and RAF Martlesham Heath during 1945 and 1946. BLEU was a unit of the British government tasked with creating an early autolanding system for military and civilian aircraft from the late 1940s until the mid-1960s. Research during the first few years at BLEU led to the conclusion that a promising approach to blind landing would be a fully automatic system, and produced a definition of the requirements for such a system, later designated Autoland. BLEU's work resulted in an eponymous system for controlling airplane landings; Flight Lieutenant Noel Adams made the first automatic landing on 3 July 1950 in BLEU's test plane, a Vickers Varsity. The system was eventually approved for commercial use, 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.The BLEU played a vital role in the development of autolanding, and descendants of its system are still in use around the world today. This film was shot by the R.A.E. Bedford Flight Photographic Group. The runways shown are likely at Heathrow, which was used by BLEU pilots for test flights when it was fogged in. • 0:25: Cloud base at 310 ft, runway visual range 1,000 m, Category 1 conditions. The pilot is using manual control for landing. • 1:36: Cloud base at 160 ft, runway visual range 700 m, near upper limits of Category 2. Conditions worsen during the second test run. • 2:36: Cloud base at 130 ft, runway visual range 400 m, near lower limits of Category 2. Manual control throughout, with high risk of abandoned landings. • 3:25: Cloud base at 60 ft, runway visual range 200 m, Category 3A. Pilot relies on automatic approach and landing procedures. • 4:23: Category 3B corresponds to a minimum runway visual range of 50 m. Fully automatic blind landing systems are essential for safety. • 6:14: Category 1 approach in shallow, patchy fog. Visual segment is large, about 3,500 ft at a wheel height of 280 ft. • 7:23: Category 3B, runway visual range 150 m. Visual contact early in approach, but visual segment shortens significantly. • 8:22: Category 3B, runway visual range 150 m, deeper fog. Visual contact established at 170 ft, but brief glimpses of lights down to 70 ft. • 9:30: Test runs in shallow and deeper fog, runway visual range of 90 m. Visual contact reestablished at the threshold. • 10:25: Runway visual range 90 m, near lower limit of Category 3B. Pilots experience different visual sequences in various fog conditions. Motion picture films don't last forever; many have already been lost or destroyed. For almost two decades, we've worked to collect, scan and preserve the world as it was captured on 35mm, 16mm and 8mm movies -- including home movies, industrial films, and other non-fiction. If you have endangered films you'd like to have scanned, or wish to donate celluloid to Periscope Film so that we can share them with the world, we'd love to hear from you. Contact us via the weblink below. This film is part of the Periscope Film LLC archive, one of the largest historic military, transportation, and aviation stock footage collections in the USA. Entirely film backed, this material is available for licensing in 24p HD, 2k and 4k. For more information visit http://www.PeriscopeFilm.com Source: https://www.youtube.com/watch?v=K9yP86eeMG0 Mirrored from Periscope Film (https://www.youtube.com/@PeriscopeFilm) Thu, 11 Jun 2026 05:10:02 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://peertube.dngr.us https://peertube.dngr.us/lazy-static/avatars/41a6fee9-7f57-42d0-a5fc-5db4f1af2e31.png https://peertube.dngr.us/videos/watch/6f613af4-ed5b-467f-9ab9-299b10f6b5e4 All rights reserved, unless otherwise specified in the terms specified at https://peertube.dngr.us/about and potential licenses granted by each content's rightholder.