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

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

#111
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.

The times I've used it, they turn off the in-flight Wifi at the same time all the other electronics are supposed to be turned off. So that seems consistent to me.

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

#112

Earlier quoted context omitted.

In another, more macabre calculus: 1.6 billion hours per year = 182648 person years per year Divided by forty (perhaps the average number of years of life expectancy remaining for fliers) = 4566 remaining lifetimes stolen = equivalent of 4566 deaths which is more deaths than caused by 9/11. Every year.

That's a ridiculous way to look at it.

Why? What common units would you convert it to?

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

#113

Earlier quoted context omitted.

In another, more macabre calculus: 1.6 billion hours per year = 182648 person years per year Divided by forty (perhaps the average number of years of life expectancy remaining for fliers) = 4566 remaining lifetimes stolen = equivalent of 4566 deaths which is more deaths than caused by 9/11. Every year.

That's a ridiculous way to look at it.

Out of genuine curiosity, why is it ridiculous? Stolen time is stolen time, no?

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

#114
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…

As the author of the piece, I have to disagree with you. First, the F.A.A. never used this as a reason when I spoke with them for my story. Second, if that were the case, then why are people allowed to read books, magazines, and play crossword puzzles on paper? Reading a book on a Kindle will not cause more distraction during an emergency than reading one on paper. Thanks, Nick Bilton.

When I looked into the topic years ago, ISTR finding a few FAA incident reports that did involve consumer electronics causing harmful interference with cockpit navigation systems. They didn't result in accidents but seemed well documented.

Did you come across anything like that?

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

#115

Earlier quoted context omitted.

After a 30-degree navigation error was corrected by turning off a DVD player, would the pilot seriously endanger the aircraft by asking the passenger to turn it on again to test? Anecdotal, and probably completely false.

> After a 30-degree navigation error was corrected by turning off a DVD player, would the pilot seriously endanger the aircraft by asking the passenger to turn it on again to test? No? 1. It was already demonstrated that turning it off fixed it. If you see the instruments goof up again, you tell the guy to turn the player back off. 2. Pilots are extensively trained to deal with equipment failures, including total los…

I don't buy it. Ostensibly, this is a commercial flight where lives are at stake, so I strongly doubt that absent FAA direction the pilot requested this test.

It was already demonstrated that turning it off fixed it. If you see the instruments goof up again, you tell the guy to turn the player back off.

It's unclear from the account whether this was an instrument error or an actual flight path deviation. The latter being a more serious and unpredictable error. Who in their right mind would want to repro this given the unknowns?

Pilots are extensively trained to deal with equipment failures, including total loss of power and instruments.

Pilots also operate in an environment of substantial regulation where I'm sure a policy exists for investigation of operational interference. I suspect this policy is in line with the FAA's stance that "avoidable interference is unacceptable" and certainly this incident describes an avoidable interference.

I don't see any reason to retract my position that this story is likely a myth.

EDIT: My position depends on a number of assumptions that may be faulty: that this incident took place in the USA, within the last decade, on a plane operated by a significant carrier.

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

#117

Let's presume for a moment that some sort of interference which could be generated by a box the size of a laptop might have a non-trivial risk to passenger safety. Now, think as a terrorist might. How about sending your minions onto planes with devices which look like standard consumer electronics devices but are capable of generating high levels of interference? Around the holidays in the US, someone checking or car…

No. There's still a human pilot flying the plane. Even an arc welder (probably) won't magically make it go in to a nosedive.

What could happen however is that certain navigation systems become unreliable during landing. Add that to bad weather, bad information, human error, and bad luck and you have a potential disaster.

But it doesn't seem likely that a terrorist would find such a plan worthwhile to pursue. After all, they want to be the star of the show right? Would they martyr themselves so some pilot gets the blame for landing on the wrong runway during a thunderstorm?

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

#118

There were 769.6 Million passengers carried in 2009 in the USA (domestic and international). If each loses 30 mins of productive time on a plane because they can't use e-books or devices below 10,000 ft, that's 384,800,000 hours per year lost. Not everyone is working or learning something on a plane, but it puts things into perspective. http://www.bts.gov/press_releases/2010/bts015_10/html/bts015...

I have used this sort of reasoning when arguing against low speed limits implemented in the name of safety. Surely, for each 10 MPH decrease in highway speed limits, we will observe a decrease in the number of deaths per year? Presuming both this fact and the presumed political validity of speed limit reduction to decrease death rates, shouldn't our vehicles be limited to walking speeds? The reality is that most people implicitly choose an overall level of risk in their lives and optimize the apportionment of that risk among activities in a way which maximizes their happiness. If it took me four hours to commute to work because I drove 10 MPH to be "safe", I could either spend less time with my family or move my family closer to the office. Would my children end up successful in life if they rarely saw me? The end game of everyone moving closer to the office might be little specs on the globe of uber density -- an unhappy way of life for most. How about subsisting on ration kits (like those currently sold to doomsayers) as a way of minimizing the horrific risks associated with un-necessary trips to the grocery store? Obviously, people have some threshold of risk at which they choose expected quality of life over expected quantity. Airplane travel, either with or without restrictions on "portable electronic devices" can be evaluated similarly. And, given Americans' propensity to drive places at high speeds, shouldn't they be equally willing to incur what seems to be a trivial risk in order to have more productive time?

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

#119

Earlier quoted context omitted.

The FAA/TSA alway justify things in terms of "safety" and "security", but never calculate the massive costs associated with seizing billions in toiletries and productivity. Let's calculate that. There are about 800 million[0] passengers on domestic and foreign owned airlines in the US market, with many people flying more than once per year. Each person is taxed between 1-2 hours in terms of "safety" regulations, rang…

In another, more macabre calculus: 1.6 billion hours per year = 182648 person years per year Divided by forty (perhaps the average number of years of life expectancy remaining for fliers) = 4566 remaining lifetimes stolen = equivalent of 4566 deaths which is more deaths than caused by 9/11. Every year.

If 1 billion people take a 20 minute nap every day... that's equal to 38,000 years wasted time every day... which is about 20 lifetimes every HOUR! OMFG nobody should nap!
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