Airplane is capable of playing mobile phone?

By plane to hit mobile phones? Beijing News weekly of the new knowledge and many cell phones now, particularly in high-end business machines are set to "flight (offline) mode". As the name implies, this is you can use on the aircraft. It can turn off the cell phone signal to transmit, receive functions, but still you can use the phone's other features, such as games. Recently, in Dalian to Shanghai a flight, a passenger does not listen to stewardess who discourage, refused to turn off the "flight mode" phone was subject to a fine of $ 2000. From the news you can read the following two points: first, compared with none of the phone, "not persuaded" was a more serious behavior. You know, for the flight was informed by the flight safety rules, if forced to disobedience, is likely to be regarded as hijacking; second, the "flight mode" is just wishful thinking of the mobile phone manufacturers have not been recognized by aviation sector, this is a fact. The question now is, "flight mode" really has no effect on the flight? to answer this question, we first need to know the mobile phone in the normal work on flight would produce great harm. Aircraft prohibiting the use of mobile phones require first appeared in 1991. At that time, the United States Federal Communications Commission (FCC) made this provision on the grounds that the emission of radio waves, cell phones may interfere with the null distribution. It is widely accepted that the public has been implemented. But in the civil aviation industry, yet there are a large number of dispute. Including the United States the Boeing Company, Discovery Channel, many organizations through various means, done a lot of related experiments. However, they did not find evidence that mobile phones can have any ground-air traffic is worth mentioning. (They can not be proven that no impact) Accordingly, although the FCC in the rules on the retention or abolition of swaying (most recently in 2007), but still maintain the original provisions. Now that mobile phones can emits radio waves, so why not prove it affect ground-to-air communications? this is because the air signal using 118MHz band, while domestic GSM mobile phone with WIFI 900MHz left band signal frequency higher, they vary so much that in theory is not jamming together. In fact, however, because the phone is in the way of frequency hopping impulse transmission signal and, therefore, have many different frequencies of secondary waves. These secondary radio despite very weak, but in the face of airborne communications equipment of ultra-high sensitivity, it is not very reassuring. In cannot determine whether there are obvious risks, in line with the principle of safety first, the mobile phone has become the enemy aircraft, because the air is not a "clinical laboratory". So, there is no history of mobile phone is not off the flight accident? "you say, it really is. In 2009, the United States a plane in the take-off run, the Deputy Commander of the phone suddenly rang. Cockpit in the Bell, Captain felt very annoying, Deputy Commander also perplexed God, delayed response surface call. Though no consequences caused, but this is still regarded with security incidents, the mobile phone is through this way, succeeded in disrupting a "ground-air communication". In addition, some air disaster are also suspected to be caused by mobile phone, such as some people have been suspected of Austria "5 · 26 crash" reason is mobile phone interference caused the engine in the sky opened backstepping. But there is no reliable evidence to prove it. In the actual operation cell phone signal on the impact of aviation security? I have privately with several aircraft captain talk about this thing. The answer also confused, the following are the three most representative statement — a: absolutely not. But we still afraid, afraid of the event. A team from the United States did experiment with many strong than cell phone signal source, that there is no interference. B: two, neither of ten years. But you know, if the plane together over 200 mobile phone signal, power search? c: frequency is no different, but not necessarily. It's like you end ears listening to the violin, but some seen next to. Visible for this pilot is each have their own views. Mobile phones do affect flight safety, but no conclusion. See here some readers ask, that we could turn the phone on the plane? for the time being at least, this problem is very simple: by air will have to comply with the rules by plane. Discuss the scientific principle does not mean that you can break the rules. In addition, in a closed, small, quiet aircraft off the phone, it is also a courtesy, reflecting a civilization and the care of others. □ Su coconut (Jiangsu artificial intelligence professional)