Mobile phones - cellular telephone on aircraft

mobile phones on commercial aircraft is usually prohibited during journey. The most renowned reasons for this ban is that a mobile phone could interfere with the sensitive gear on the aeroplane, and the interference with ground based networks. This policy is frequently based around the fact that during development, many aircraft were not designed to accept signals from mobile phones and there has not been enough testing to be sure they could.
However, the application of mobile phones on an airliner is prohibited across the board by most aviation regulators, and the design specifications of aircraft are not taken into account.

phones can't be used on planes for two reasons: A) airlines say they can interfere with navigation systems. B) cruising altitudes they cannot connect with the network of masts on the ground, though at low altitude, they can.

A level of electromagnetic interference is notionally achievable from active radio transmitters such as mobile phone. Exactly how much and in what way is dependent on the particular phone system in use and the plane in question. Whether level of interference should have any influence on electronic systems which should be designed to fly through lightning storms without failing is often disputed by critics of the ban.

Some mobile phone systems such as GSM may cause an irritating which would certainly disrupt communications from the pilot to ground. The speed of air travel may make interference more likely than it would otherwise be. The maximum speed of travel in a mobile phone system is limited by frequency changes, rate of change of timing offset, etc. The speed of an airplane often exceeds these which means phone will fail to register to the network.

Older analog cell phones broadcast at a higher power of up to several watts. The high broadcast power has potential to cause broad interference, and since the voice signal is not encoded there may be anxiety of crosstalk to the communication system of the plane, although unlikely because the plane's radios transmit in a different frequency.

One area in which interference would be most likely is in the radio-based audio equipment used for voice communications between the aeroplane and the ground.

A recent study shown cell phones interfere with flight equipment. While not as drastic as causing a plane to crash, cell phones can interfere with intercom and voice communications. GSM phones most likely do this, because they produce noise from speakers. However, it would likely be legally difficult to ban certain cell phone providers , in the USA, that would include Cingular and T-Mobile, while not others.


Plane maker Airbus, carried out a two-year investigation to show that mobiles can be used on planes without interfering with navigation systems.

American Airlines has been working on flight mobile technology for some time and plans to introduce it.

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Mobile phones - cellular telephone on aircraft