Adcock Range National radio navigation system replaced after World War 2 by the omnirange system. It consisted of segmented quadrants broacasting Morse Code "A" (dot-dash) and "N" (dash-dot) signals in opposing quadrants so that pilots could orient their position relative to a "beam" broadcasting a steady tone, and a Morse Code station identifier. Using a "build-and-fade" technique, a pilot could (ideally) pinpoint his location by the strength or weakness of a signal.

Aero Linx: Cessna Pilots Society Cessna Pilots Society is a group of Cessna Owners, Cessna Pilots, people looking to acquire a Cessna aircraft, Cessna mechanics/technicians and other Cessna enthusiasts. The main purpose is to have a fun place to gather with people of similar interests to discuss airplanes and aviation topics in general. There is a wealth of information to be gained from the collective experience of all the members. Some are mechanics others are just seasoned veterans of the aviation community, all willing to openly share their knowledge. If you like flying to different places to meet old friends, or to make new ones, this is the place for you. We have events ranging from local regional gatherings, to

“Accurate information about 'what’s ahead' is critically essential to pilots, especially when flying passengers on the world’s largest twinjet. MultiScan ThreatTrack provides flight crews with a more defined picture of potentially disruptive weather threats, ultimately increasing passenger satisfaction as a result of smoother flights and more on-time arrivals.” Source: Steve Timm, vice president and general manager, Air Transport Systems for Rockwell Collins, commenting on the certification of their MultiScan ThreatTrack weather radar -- which is now flying on Boeing 777 aircraft. Taiwan-based EVA Air was the first airline to take delivery of and operate a new 777 equipped with the advanced airborne radar