Word: cas
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Successive Alarms. The new system was sponsored by the Air Transport Association as insurance against airborne chaos. Like the planes used in Baltimore last week, each aircraft equipped with CAS is, in effect, shielded by a huge protective electronic bubble. When one plane's bubble brushes another's, it triggers successive alarms in both cockpits. The first comes 42 seconds before the moment of collision as calculated by the CAS's onboard computers. If the planes are still headed toward each other at 30 seconds, a flashing red light warns the pilots to prepare for evasive action...
Both pilots, in fact, did have a helping hand. The "near miss" was the first public demonstration of a promising new collision-avoidance system (CAS) that may reduce some of the risks of flying in the nation's increasingly crowded skies. Last year the U.S. had 38 aerial collisions, a 46% rise over 1967. In the years ahead, the risks will increase, as more planes-including jumbo jets and SSTs (see BUSINESS)-join the rapidly growing U.S. air fleet...
...than a tiny fraction of a second-in an assigned order of rotation at exact three-second intervals. The system demands such accuracy that all the planes must carry atomic clocks, which are precisely synchronized to a master timepiece on the ground or aboard one of the planes. Theoretically, CAS is so fast and efficient that it can safely handle as many as 2,000 planes over an area of more than 61,000sq...
...canyon of incomparable beauty. Red sandstone walls climb 5,300 ft. above 518 verdant acres. Waters cas cade down arching falls and sparkle in terraced pools coated with deposits of travertine. From this flow came the settlers' name. The Havasupai Indians- "people who live by the blue-green water" - occupy, as they have for ten centuries, the floor of Cataract Canyon in Grand Canyon National Park...
...construction combine, and other U.S. firms, agreeing in return to pay a royalty to Air Viet Nam, the understaffed government airline that has a nominal monopoly on Vietnamese commercial air travel. Having assembled a motley but eminently suitable short-haul fleet led by eight vintage C-47 transports, CAS expects to take in at least $9,000,000 this year and make its first annual profit...