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> - le deuxième lien > http://en.ce.cn/World/Americas/200409/16/t20040916_1776533.shtml > me renvoie : Hôte en.ce.cn inconnu Chez moi ce lien marche: S. California airports recover from communication problems Last Updated(Beijing Time):2004-09-16 14:06 Commercial aviation returned to normal Wednesday morning after an apparent computer glitch disabled radios and radars at a US air traffic control center in southern California, disrupting flight schedules nationwide. By early Wednesday morning, things were back to normal at Los Angeles International Airport (LAX), said airport spokeswoman Nancy Castles. "In terms of our backlog -- flights coming from the East Coast to LAX -- we caught up around 2 a.m.," Castles said. "In terms of the air traffic control situation, the Federal Aviation Administration was back to 100 percent capacity about 2 a.m." Hundreds of flights bound for or leaving southern California airports were diverted or canceled late Tuesday after the glitch paralyzed the Los Angeles Air Route Traffic Control Center in Palmdale. Radios and radars at the center, which controls cruise-altitude air traffic across Southern California and parts of Arizona and Nevada, went dead at 4:40 p.m. Tuesday (12:40 GMT Wednesday) and came back up at about 8 p.m. (16:00 GMT Wednesday), according to Federal Aviation Administration officials. Some pilots had to take evasive action to prevent in-flight collisions in at least three instances. Some planes had to circle in the air for more than one hour or were diverted to neighboring airports for landing. In one incident, a UPS cargo jet en route to Ontario International Airport in eastern Los Angeles County and a leased Cessna Citation business jet, both moving at about 450 knots, narrowly avoided in-air collision at 35,000 feet. Officials did not immediately determine the cause of the computer glitch that caused the radio and radar failures as well as the failure of a backup system. Mike Fergus, an FAA official, said the failures did not present a safety problem, thanks to radar-tracking systems that enable aircraft to maintain proper separation in the air. The breakdown created a snarl throughout the commercial aviation system. As many as 800 commercial airline flights bound for Los Angeles International, Ontario, Bob Hope, John Wayne, Long Beach and Palm Springs airports and Lindbergh Field in San Diego were diverted to airports in northern California and other states, the Los Angeles Times reported. At the same time, planes scheduled to take off for southern California were held on the ground at airports nationwide, as were planes scheduled to leave Southland airports. The breakdown left tens of thousands of passengers stranded at airports or circling in the air before landing far from where they had intended to be. There have been problems with the air control in southern California. A computer problem at the Palmdale facility in May 2001 also delayed flights across southern California for about an hour, The Los Angeles Times reported. Flawed software being installed on computers in October 2000 resulted in hundreds of flights being delayed, causing a ripple effect at airports across the nation, according to The Times. In August 1999, a computer failed at the facility, delaying flights in southern California and Nevada for as long as 90 minutes. Source:Xinhuanet -- 3mor3j -------------------------------------------------------------------- Les listes de diffusion occultes: <URL:http://www.CULTe.org/listes/>