In the aircraft (especially domestic flights) required to turn off all electronic equipment during the flight is to strengthen the protection, to avoid all possible signal interference sources, in fact, it is inevitable to have the suspicion of overcorrection, but the truth is that most of the management in the country follow the principle of rather kill the wrong can not be let go.
Question: In theory, the flight mode of the mobile phone is similar to the effect of not inserting a sim card, and it will not send wireless signals to find nearby base stations that can log in, since it does not send signals, in principle, there is no problem of interfering with the flight of the aircraft. If it comes to electromagnetic harassment generated by electronic equipment, the intensity is minimal, even far less than the electronic entertainment equipment in the cabin, so in fact, it has almost no impact.
Second question: Also based on the above reasons, the closure of electronic equipment without launch capability is only to further guarantee the occurrence of all interference sources. In fact, the electromagnetic interference from devices such as cameras or DV is almost negligible, not to mention the well-shielded navigation system or control computer far away in the aircraft's equipment bay. If the slightest electromagnetic interference can affect flight control, then the flight of the aircraft is too fragile. In fact, in many airlines' internal newspapers and magazines, you can often see photos or promotional videos of the cabin or even the cockpit during the flight. Does this kind of shooting authorized by the airline company use specially designed equipment? If these devices affect the safety of the flight, would the pilot on duty allow the filming? So electronics have virtually no effect on flight.
Three Questions: Devices with wireless transmission functions, such as wifi laptops, do have a certain impact on flight control, according to active pilots, especially during the take-off and landing phase, wireless clutter may affect the dialogue between the pilot and the control tower, despite the fact that the flight control instructions will be confirmed several times, but it is not certain that someone will turn on such devices will affect the flight control. But if you can, try to turn off the electronic devices that emit.
You can't turn on your cell phone while the plane is flying smoothly. When the plane is flying smoothly, it is 6,000 meters to 12,000 meters from the ground, and the mobile phone can not receive the signal and cannot be used.
Mobile phones and other electronic products are not allowed in the cabin.
In the aircraft, the electronic devices used will interfere with the aircraft's communication, navigation, control system, will interfere with the wireless signal contact between the aircraft and the ground, especially when the aircraft takes off and lands, even if it only causes a small Angle of deviation, it may also lead to the destruction of the aircraft and death, is a threat to flight safety \"killer\". Take mobile phones as an example: mobile phones not only emit electromagnetic wave signals in the process of making or receiving calls, but also keep in contact with the ground base station in the standby state, although the time of each signal transmission is very short, but it has a strong continuity. During takeoff and landing, it is possible for mobile phones to contact base stations on the ground, but this time the consequences of interfering with navigation systems are most serious.
In the Civil Aviation Law of the People's Republic of China, Article 88 restricts the use of portable electronic devices by passengers on board the aircraft, and Article 200 provides for public security administrative penalties and even criminal penalties for violators. Airlines have also added in their in-flight announcements a requirement for passengers to turn off the power of portable electronic devices on board, such as mobile phones, pagers, remote controls for game consoles, amateur radio receivers, laptops and CD players. When we enjoy the convenience brought by modern technology, don't ignore the relevant laws and regulations of the country, especially when it comes to the safety of their own lives and those of others. When you get on the plane, ask yourself if you have turned off your cell phone, pager, or game console. .
A beautiful stewardess will come to you with a smile and say: \"Sir, please turn your mobile phone into flight mode or turn it off, otherwise the captain of this plane is not as awesome as the Chinese Captain, and our crew can only give you an umbrella because your mobile phone is in danger at high altitude, so please be sure to cooperate, thank you!\"