Mobile phones are becoming more and more popular, but they can't be used in solo airplanes.
This month, an Arab was scolded for using his mobile phone when the plane took off.
In 1998, British oil worker Neil Whitehouse was jailed for a year for refusing to shut down the unit on a flight.
Swiss investigators believe that last year's lx498 air crash is likely to be related to mobile phone interference. The air crash killed 10 passengers.
Last month, a plane flying from Slovenia to Sarajevo suddenly had a long siren and had to make an emergency landing. Investigators found a mobile phone in the luggage compartment that was switched on.
In fact, passengers on the plane can only contact the ground through the telephone on their seats. The flight community insists that it is very dangerous to use mobile phones during flight. All kinds of signs clearly prove this point.
Therefore, passengers must not use mobile phones in flight.
"Although there is no hard evidence, mobile phones do seem to affect airplanes in some cases. 'said researcher John Sheehan. 'of course, this kind of interference is rare. '
Nowadays, the prohibition rules of electronic devices are increasing. Some passengers even hope that all electronic devices will be banned, because they are bored - even the click of a laptop keyboard is intolerable. John Duncan. Now, people are allowed to use laptops while flying.
'it's like smoking. When someone asks, "can I smoke?", others are always very polite. Let them smoke, even if they don't want to. It's the same on the way. The person sitting next to you wants to use a laptop, and even if you're upset, you're embarrassed to object. '
Nowadays, more and more people use mobile phones; more and more people fly. So more and more people want to use mobile phones on the way.
But they can't.
What's more, the cause of mobile phone interference is still unknown. It's very expensive to use a landline phone on a seat in an airplane. In the United States, it's three dollars a minute. A 20 minute call costs $60. Companies are not happy about this.
'I doubt whether it's necessary to ban mobile phones on flights, because you can make phone calls in airplanes as long as you pay. 'said Larry Murphy, vice president of flying food.
In addition, Murphy said, 'in a private plane, you can definitely use a mobile phone. '
So, why are mobile phones banned in airplanes? People's business is getting busier and busier, and they need to keep in touch with the ground at any time. Therefore, this problem is becoming increasingly prominent..
Both the aviation industry and the Federal Communications Commission say cell phones are not allowed on flights. But their reasons are different. Critics point out that their reasons are even completely contradictory.
The FAA said the ban was due to safety concerns. There is enough evidence that mobile phones can affect normal flight.
For example, data from RTCA Aviation Consultants prove this.
However, mobile phones can still be used in private aircraft.
The U.S. Communications Commission believes that the ban on mobile phones has nothing to do with security issues, but for the sake of signal interference. They pointed out that the use of mobile phones in high altitude will cause interference to signal tower signals, thus affecting ground users and causing problems such as line string.
However, there is no evidence of this claim. What's more, due to their 'omissions', the mobile phone users of sprint PCs and at t are not banned. Does this mean that the theory is ridiculous?
One explanation sounds reasonable: the frequency of the mobile phone is different from that of the aircraft device, so it causes interference. University Professor Tim Brown said.
But neither the FAA nor the Communications Commission intends to lift the ban.
According to statistics, there are two American flights per second, carrying 1.5 million passengers a day. The number of mobile phone users in the United States exceeds 110 million.
Analyst Galen Schreck commented, "things are getting more and more troublesome. On the plane, all wireless devices cannot be used: mobile phones, pagers, PDAs & hellip; & hellip;. Only portable computers can be used. '
According to Sheehan, 15% of flight revenue comes from phone calls,
The telephone fixed on the aircraft seat is different from the ordinary mobile phone. The signal is shielded and controlled by the satellite system. Therefore, it is not expensive to use this kind of telephone.
The mobile phone industry also said it couldn't build a special tower that could travel 600 miles at 33000 feet. As a result, the ban on the use of mobile phones in flight cannot be lifted.
However, passengers are busier and more dissatisfied. 'now that technology is so advanced, they can definitely come up with solutions. 'murphy said.