Instrument Landing Scrapbook Author:Chester B. Watts, Jr. The book deals with the origins and development of Instrument Landing as seen by the author from 1940 to the present time. The cover shows a portion of the front main antenna of the first production Model 105 End Fire Glide Slope installation at Charlotte, NC. United Air Lines, in the 1940's, supplied a retired Boeing 247D transport, with pilot,... more » to the Aircraft Radio Laboratory, Wright Field, for many of the early tests and demonstrations of Instrument Landing as well as automatic landing or coupled approach. The CAA Experimental Station at Indianapolis had a similar Boeing 247D . A third 247 was shipped to England for use by the RAF Blind Landing Experimental Unit at Defford. In all three aircraft, the hydraulic autopilot had been replaced by Honewell Type C-1 electric autopilot with coupling unit, connected to the ILS crosspointer signals. The book is divided into decades, continuing in a simiolar way to the present time.« less