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Error, through a pilot making a mistake, but remember, there s avionics on board, particularly one called tcas, collision avoidance assistance. reporter: the faa has taken steps to prevent occurrences in the future but didn t say what the steps are. the faa also telling us an instructor was there at the moment of this incident ready to step in if necessary. however, the faa saying that this trainee was able to correct the problem immediately. we want to point out one other thing, wolf. ever since that technology, the collision avoidance technology has been placed in cockpits we haven t seen any actual collision and of course, that is a good thing. that s a very good thing, indeed. rene, thanks very much. let s bring in aviation correspondent richard quest to talk more about the close calls in air. is it getting close, richard, ....
Yet, but that s the warning sign that one could happen, brianna. and that s how they analyze these circumstances where it s all happening very, very quickly. certainly too close. you can see it when you put it that way, tom. what happens if two planes get inteach other s space and the tower just for some reason doesn t notice, doesn t warn them? then what? well, interestingly enough, there is a system for that. let s say this happens. they re getting into each other s space and they re getting deeper into each other s space, that s when this kicks in. for some years now, congress has mandated that commercial jet line betters outfitted with something called the traffic collision avoidance system, or tcas. basically, what that means is there are computers on board watching out for this. and if the computer on within plane sees another plane in its space, it will warn the pilot. it will say hey, somebody is getting inside your disc, inside your plane s personal space. and if it keeps ....
To the other tcas computer in the other plane, and those computers will tell each other look, we re getting too close. you go high and i ll go low. and we will not run into each other. and in fact, since this has started, there has not been a single mid-air collision between two jets that are outfitted with the a tcas system. that s pretty important, as we all keep flying in greater and greater numbers, breene. that that. is an impressive last line of defense. thanks for explaining, tom foreman. you re welcome, brianna. and outfront tonight, richard quest and cnn aviation analyst mary schiavo. so mary, you have heard this. the fourth near collision in the past month. is this happening more, or it is just being reported more? well, it s both. back in 2010, 2009-2010, there was a 50% increase in the office of inspector general, my old office did a study. and they found both. they found that they were reporting more because the faa put in an amnesty program. if you turn yourself ....
By 1989 all aircraft operating up to 10,000 feet within 30 miles of terminal control areas must be equipped with transponders that convey altitude information. by 1993 all commercial carrier aircraft with ten seats or more operating within u.s. airspace are equipped with traffic alert and collision avoidance systems, tcas. the culmination beginning back with piedmont flight 22 going through the psa accident and then finally through the cerritos accident were all building blocks to promote this technology, which evolved into the modern system of tcas, which is a great predictive tool. the faa really had to take the bull by the horn, if you will, and do something to try and prevent these accidents from occurring. we increased or enhanced radar coverage. ....
Unbelievable there. here s what bill asks. other 777s experience software malfunctions in the past. could it have sent the play to stall and plummet on this flight? i m unclear about your question. the airplane is a very stable aircraft and easily controllable by trained pilots. they just don t fall out of the sky. i have something here quickly we have to get to before the top of the hour. someone says a pilot the same pilot says i say good night all the time. and i say good morning. if the ttcas was turned off you wouldn t know if an airplane was near you. commercial airplanes don t have radar that picks up airplanes. it s for weather and traffic ....