Mark M
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It interfeers with the radio communications of the airplane. To see or actually hear this happening, take your mobile phone and stand near a radio you will hear the interfeerence if you make a call or someone rings you.
They need to be in constant comminucation with the control towers and other planes in the vacinity. It is only during take off and landings as this is where there is a high concentration of planes in the air around these areas. |
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Robin the Electrocuted
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Seriously, guys, it's nothing to do with elecromagnetic radiation from devices or any other kind of interference that may affect the aircraft equipment.
It's purely to do with the fact that take off and landing are the more dangerous times in a journey and if the air crew need to communicate to the passengers in an urgent manner they need to ensure that everyone will be listening (and not listening to ipods, PSPs etc.) |
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flyinggoldfish
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As you can see the reasons are twofold...
On older aircraft (60's, 70's) without hardened avionics systems, the sensitive navigation radios could be effected by devices which emitted EM radiation. This led to civil aviation authorities banning the use of devices which emit such radiation while in flight.
Because of the massive increase in the use of portable electronic devices in the past 20 years, all modern airliners must have hardened avionics which shouldn't be vulnerable to such interference. However as a precaution the proscription on the use of such devices remain.
Passengers are asked not to use ipods etc during takeoff and landing as a precaution in case something should go wrong. In the even of an emergency at either time the crew only have seconds to prepare for the worst and a passenger who is distracted by their gadgetry could well prove to be a danger to themselves and to others.
BTW, the ILS is only used for landing, (it stands for Instrument Landing System). On takeoff pilots follow standard published departure routes or specific instructions from controllers on the ground. |
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pinktrollydolly
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One reason for asking you to turn off electrical items is becasue the cabin crew need your attention during take off or landing incase something happens. They are the most critical stages of flight. You cant wear headphones incase there is an emergency pa or an evacuation and you will need to know what is going on. hope that helps x |
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Johan from Sweden
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There is a slight chance that such equipment might disturbe a planes electronic equipment such as navigation and communication gears. Up in the air that is not an trouble sincer there is enough time to find out a troublesource but while taking off and landing you cant take that risk and you need accurate coms and navs at that time since its the most critical time off the flights due to the proximice of the ground. Johan
It was interresting to hear about the attendant. It sounds very likely that it is due to the fact that they want you the hear announcements and so on. But I dont knew how that is affected with people that cant hear or use a noiceblocker... |
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ScientistX
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Robin is totally right, IBM tested this out on a flight with mobile phones ringing, laptops and everything else. It doesnt affect the circuits or radios at all. They tell you to put them away because to stop you injuring yourself and minimise lawsuits etc. to the company as these times are the most dangerous.
Also phones are banned from being used on aeroplanes not because of interference with the aeroplanes equiptment but because if you use your phone at high altitudes they cant trace the handset and you can effectively make free calls. |
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mikelyt78
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Any electrical devices emit electromagnetic (EM) waves which might affect the instruments/equipment on the plane.
I am guessing that during landing or taking off, the risk of crashing is greater than when you are in the air. (you have more time to rectify the situation when you're thousands of meter up in the sky) |
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Girlsgirl
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It's because the take/off landing stage is the most dangerous, so the cabin crew need to have your full attention. You won't be hearing 'BRACE BRACE' with an IPOD blaring in your ears. Another reason is that the electronic equipment might be dangerous if there was an accident in these stages, say a carsh landing and fuel was spilled, like when an aircraft is being refuelled with passengers on board, they cannot use electronic equipment. I know it seems silly as the whole aircraft is an electronic devise! But I don't make the rules :P |
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vivi
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Not sure why, but like having mobile phones on - it can interfere. I'd rather go without sounds or phone and be safe! |
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adrian p
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I cannot imagine that it is to do with the amount of EMR that an IPOD gives off so it must be an attention thing.
i have heard that it is now accepted that Mobile phones do not interfere with electrical devices, but you only have to see/ hear how they affect TV's and Radios to dispute that one, apparently if you use a mobile whilst in the air it can cause problems with the mobile network because of the speed with which you are travelling because you are crossing the network faster than it can keep up |
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darren f
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how are you going to hold your sick bag if your hands r full of phones and ipods and stuff! |
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SP/ARMAGH
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The reason is more to do with passenger safety than inteference etc..
Imagine trying to evacuate a plane with every one wired up to their IPOD and the chaos that would ensue...
Same as turning the lights off, or dimming for take off and landing so your eyes are accustomed to the prevailing light conditions. |
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Ryan J
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All can be cleared by asking a crew member |
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Zzyzx
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Alledgedly, t can affect the radios and electrical systems on the plane.
Real reason is Takeoff/Landing is the most dangerous part of the flight. God forbid there is serious trouble the crew needs to tell the passengers what is going to happen. |
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srracvuee
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because interference with take off and landing are the two dangerous manoeuvres the plane does and relies on radar and radio to get it on the tarmac so DON'T ever think about using anything electrical during that period if you want to live a bit longer |
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briggs
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technically speaking flight instrument have a degree of protection from any electronic interference wether its from cellphone or other electronic device use by the passengers. Most probably flight crews prohibit the use of any electronic devices during this situation is that because they want the passengers to listen to their instruction during takeoff and landing and flight safety instructions. |
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ashleysimcox2000
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i think its the frequency they run off, it interferes with the technical equipment (its like hospitals). But i always thought that you could use ipods etc for take off but just couldnt use phones |
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preet
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It can affect the radios and electrical systems on the plane, . To see or actually hear this happening, take your mobile phone and stand near a radio you will hear the interfeerence if you make a call or someone rings you.
They need to be in constant comminucation with the control towers and other planes in the vacinity. It is only during take off and landings as this is where there is a high concentration of planes in the air around these areas.
Any electrical devices emit electromagnetic (EM) waves which might affect the instruments/equipment on the plane.
during landing or taking off, the risk of crashing is greater than when you are in the air. (you have more time to rectify the situation when you're thousands of meter up in the sky) |
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mblackash
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Any electronic device gives off eletro magnitic waves.
Upon taking off or landing, the aircraft uses an instrument located on the airfield called I.L.S. (instrument landing system), the point of this system is for the aircraft to select the correct glide angle and postioning for the runway upon landing.
On take off this system does the reverse to selct the correct air corridor when leaving the end of the runway.
The E.M.W. can affect this system |
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kish
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Because it interefers with the control room. |
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Ryder
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its to anoy you really |
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simon j
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It can affect the radios and electrical systems on the plane, not sure why its only during take off and landing though |
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