American Foundation for the Blind York City headquarters. Louis Braille was the Frenchman who invented the raised dot code that bears his name. On January 4, 2009, the 200th anniversary of his birth, AFB created an online gallery that includes pictures of him and digitized books and articles. AFB's main headquarters is in Arlington, Virginia. Other offices include New York City; Dallas, Texas; and Huntington, West Virginia. In 2012, AFB added VisionAware to its family of sites in partnership with the "Reader's Digest" Partners for Sight Foundation. The site folded in content from AFB's Senior Site, with new information and resources for adults of all
Blind Approach Beacon System to fly left or right and indeed up or down with a co-located glidepath (328.6 to 335.4 MHz) equipment. See instrument landing system for further details. Blind Approach Beacon System A blind approach beacon system or beam approach beacon system (BABS) is an automatic radar landing system developed in the early 1940s. It is a responder (or transponder) mounted in a Hillman van and placed at the end of the runway. In some cases fixed sites were installed and by the mid-1950s Standard 9 vans were in use. It was interrogated by a "Rebecca" unit mounted in an aircraft. It