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Fliers Must Turn Off Devices, but It’s Not Clear Why

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41–50 of 301 posts

Re: Fliers Must Turn Off Devices, but It’s Not Clear Why

#42
post #8

There is actually a very logical, sensible reason to have everyone power off and stow their devices during takeoff and landing, and this story disappointingly failed to cover it: By far the most likely time for any accidents or incidents to occur is during takeoffs and landings. If everyone has 15 objects out and is busily typing away, it's going to be tht much more difficult for flight attendants to get everyone's a…

Your response is an example of the natural tendency of some people to find comfort in authority, even when it is shown to be ineffective. Nothing personal. Lots of people react in the same way. Sad nonetheless.

Re: Fliers Must Turn Off Devices, but It’s Not Clear Why

#43
post #23

What are the consequences for simply refusing to obey a crew member's instruction to power down your Kindle? Sort of like willfully ignoring the distinction between the first-class and economy security lines---something I wish more people would do.

If you are getting ready for take-off, the plane returns to the gate and you are escorted off the flight and charged with compromising airline safety and ignoring a steward's order. This happened to a guy two rows in front of me on an American Airlines flight a couple of years ago. He twice refused to turn off his mobile phone as we were taxiing towards the runway.

Re: Fliers Must Turn Off Devices, but It’s Not Clear Why

#44
post #23

What are the consequences for simply refusing to obey a crew member's instruction to power down your Kindle? Sort of like willfully ignoring the distinction between the first-class and economy security lines---something I wish more people would do.

I seem to recall being told by cabin crew that disobeying well-formed instructions of cabin crew was a violation of Federal law

Re: Fliers Must Turn Off Devices, but It’s Not Clear Why

#45
post #30

Here's what I don't understand, and admittedly I have very little knowledge of the industry. There seems to be some sort of approval process for electronics to be vetted during takeoff and landing. Several in-chair entertainment systems seem to have this rating/designation and are allowed during takeoff/landing. So, is there no dollar amount that could be paid to properly test a particular product? Let's say the Kind…

DO-254 [http://en.wikipedia.org/wiki/DO-254] seems like what you're looking for. I'm not familiar with this particular document, but the equivalent certification process for software (DO-178B) is not something that can be affixed lightly on any random product - the overhead it imposes on the development is simply way too high to be viable on commercial software.

Re: Fliers Must Turn Off Devices, but It’s Not Clear Why

#47
post #36
post #31

Earlier quoted context omitted.

FACT: the risk of my mobile phone igniting vapourised fuel in a gas station forecourt is almost exactly equivalent to the probability that my ipod nano will tangle with an airplane's cockpit electronics. It's all myth and fud spread by a) people with ulterior motives (see above) b) people who are too uneducated or too stupid to make their own judgement. Like air hostesses, petrol attendants.

Inside your iPod nano, or any other device with a computer chip is a radio transmitter. Inside the cockpit are many radio receivers, some of which are pretty critical to the proper flight of the airplane. Your radio transmitter, and radio transmitters being run by other passengers, mix and mingle their signals, producing an unpredictable effect on these key cockpit receivers. The probability that this happens is not…

The probability that this happens is not zero or low, but very high.

No, it isn't. If it were, we wouldn't be depending on the honor system.

Re: Fliers Must Turn Off Devices, but It’s Not Clear Why

#48
post #28

IEEE - Unsafe At Any Airspeed: Cellphones and other electronics are more of a risk than you think: http://spectrum.ieee.org/aerospace/aviation/unsafe-at-any-ai...

The method used in that article is just counting flight incidents in some historical data that may possibly have been caused by interference. The evidence that consumer electronics are the cause is just anecdotal:

"In one telling incident, a flight crew stated that a 30-degree navigation error was immediately corrected after a passenger turned off a DVD player and that the error reoccurred when the curious crew asked the passenger to switch the player on again."

Re: Fliers Must Turn Off Devices, but It’s Not Clear Why

#49
I think part of it is that the flight staff want you to pay attention during takeoff and landing. Having your headphones on/in means you're not listening to them.

Another part is that the flight staff wants fewer things potentially flying around the cabin if there's trouble. of course, they don't usually ask you to put away books...

Cell phone companies want you to turn off your phones because they mess with the ground towers. Flying past towers rapidly puts load on the cell network to transfer your phone's connection between towers rapidly. Your phone can also see more towers than usual, causing it to possibly flap between them in unexpected ways.

The bit about it being unsafe due to messing with the plane's avionics is total bunk, though. I never turn off electronics on flights, except to save battery.

Re: Fliers Must Turn Off Devices, but It’s Not Clear Why

#50
post #27

Yes, absolutely turn off all devices. We know with certainty that ANY transmitter can cause terrible havoc with the plane's electronics. Unless you're paying the ripoff $10 fee for in-flight Wifi, then the dangers are magically avoided.

Most inflight wifi systems give you a 30 minute free trial and deleting your cookies can usually bypass that restriction.
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