Why cell phones are swithed off while landing and take off an aircraft.?

Question

Why cell phones are swithed off while landing and take off an aircraft.?

Answer 1

because they disturb the signals of the atc

Answer 2

Every answer here is wrong. Cell phones do not disturb aircraft avionics in any way. I fly executive aircraft. If I told my passengers to turn off their cells I'd be looking for a new job and they've been using them since they were invented with no problems whatsoever for us in the cockpit. There is one reason and one reason only that the airlines don't want you to use yours. They would rather you slide your credit card into the little slot on the seat back phone in front of you. And it works. That is a huge profit center in the industry.

Answer 3

You can't use any device that transmits or receives radio signals on an airplane. The reason usually given is that they have the potential to interfere with the communications and navigation equipment on the airplane.

Cell phones have never been found to interfere with anything on the airplane. Apocryphal stories told by flight attendants and pilots have never been confirmed or duplicated by the aircraft manufacturers or FAA.

There is a move afoot to lift this restriction. You probably still couldn't use your cell phone from the plane because the towers are oriented in such a way so as to minimize signals from above.

Answer 4

Along with the slight possiblity of interfering with the planes avionics, using a cell phone while airborne can cause problems for the cell phone network.  Cell phones are "line of sight" devices.   The signal does not travel over the horizon or though hills.  While at ground level you are normally in line of site of at most 3 or 4 cell towers.  At 200 or 300 feet above the ground, you may have a line of site to hundreds of towers, and every one of them may pickup up and process your signal.  This results in a lot of extra overhead on the network.  The networks are designed with the idea that a phone will see 1 or 2 towers, not 100 or 200.

Answer 5

Mythbusters did a special on this last year. It is to cover the one in a million possibility that it could interfere with the aircraft's electronics. Cheers.

Answer 6

'cos they can intenfere with electronic and radio signals

Answer 7

Listen to john b. It`s so funny how people learn from the newspapers about life. Ask the people how deal with it daily. I can`t recall how may times i`ve been in the left and right seat doing check outs on the equipment and the cellphone never effected  the aircraft. All the aircraft did is effect my conversation. The aircraft always over road my cellphone. The frequency output of those phones on the back of the seat are the same as your cellphones on domestic flights.

Answer 8

So it wont interfere with electronics that are needed to take off and land. Yes, there is only a small chance it will interfere, but... "An once of prevention is worth a pound of cure."

Answer 9

Yup, i go with the third answerer, as I have been in the cockpit the second time guy switches on his CP and you could hear the tone (in the cockpit) as keys were being pressed. Were on landing approach. I was called by the captain just to prove that CP could be heard if someone is using. So now I believe but to the cause of serious interference, we don't want to experience it so I asked the guy to switch it off. For that, I get to smoke in the cockpit.