IP: Bluetooth risks airline safety?

[David Farber <dave () farber net>]

> From: Bob Frankston [mailto:rmf2gRisks () bobf Frankston com]
> Sent: Friday, May 11, 2001 22:51
> To: Tom Worthington
> Cc: Risks Submissions; Dan Schwinn
> Subject: RE: Bluetooth risks airline safety?
>
>
> [Warning: Usual pro-risk, anti-airline rant. Hopefully I won't wear out my
> welcome but this one is an egregious example of confusing superstition with
> science. I've cc'ed Dan Schwinn since he has expertise here so it would be
> worth getting his response before posting.]
>
> I felt obliged to look at the Advisory Circular. It is a strange document
> that should make one very concerned about flying:
>
> * Rather than presenting evidence it has phrases like "it might be fair to
> assume".
>
> * It says "there is no design standard to ensure that a PED (Personal
> Electronic Device) does not interfere with the operation of an aircraft."
> But makes no mention of the concept of any responsibility for keeping the
> planes flying. The total burden is on the passengers. In fact it says that
> it might not be possible to improve avionics because of weight
> considerations. Presumably the weight of devices I carry isn't an issue. And
> it wouldn't matter anywhere since such devices are simply presumed to be
> unsafe. Why are we using such vulnerable avionics anyway?
>
> * It presents an arbitrary list of electronic devices that are and are not
> allowed:
> == Portable Voice Recorders? What are these? Large tape recorders? If I have
> digital recorder, is that allowed?
> == Remote control devices? Does this include infrared?
> == Video Recorders? Does this include my digital camera that can do motion
> JPeg? Or my voice recorder enhanced with capture?
> == What about the myriad of other devices such as watches (which can be
> quite complex), cameras (film, digital etc), noise-canceling headsets?
>
> * The whole notion of solving this by telling people to shut off devices is
> irresponsible. It's one thing to make a list of complex rules for commercial
> environments and then blaming people if they are confused by the bad user
> interface. But you can't get away with telling civilians that they must
> watch every rule (especially even if the rules don't make sense). I no more
> think about whether my cell phone exists than I remember where I put my keys
> after I finish using them. And, increasingly, the radios will simply be
> embedded. In fact, I now have a PDA/Phone. While I do shut off the phone
> portion, it's also easy for it to accidentally turn it on In the future,
> such devices will just decide they need to communicate without even
> bothering with the idea that it has a radio inside.
>
> * Question. In an age where I can take a small cell phone out of my pocket
> and communicate both voice and data just about anywhere, why are avionics so
> very very fragile?
>
> Instead of assuring me that the airlines are very concerned about my safety,
> this goes along with the book, Fatal Words, in reminding me that these rules
> are perverse and arbitrary. The larger danger is in creating brittle systems
> rather than resilient one.
>
> -----Original Message-----
> From: Tom Worthington [mailto:tom.worthington () tomw net au]
> Sent: Wednesday, May 09, 2001 17:25
> Subject: Bluetooth risks airline safety?
>
>
> Digest: Bluetooth risks airline safety?
>
> An advertisement by Toshiba in the Australian Financial Review Monday 7 May
> 2001 (page 10: "Portege 3490 with Bluetooth - always ready to network")
> suggests that Toshiba laptops can be routinely carried on aircraft switched
> on, with Bluetooth devices transmitting:
>
> > "Imagine two strangers, each carrying Bluetooth-enabled Portege 3490s ...
> > In a fraction of a second the Bluetooth module within each detects the
> > presence of the other. ... And complete strangers can start playing chess
> > together on long flights"
>
> Apart from being misleading as laptop computers are not designed to be left
> on while being carried, this appears at odds with routine airline practice
> requiring electronic devices to be switched off during take-off. The use of
> radio transmitters by passengers is usually prohibited at any time on an
> airline. This is discussed in the Draft Advisory Circular AC 91.22 (0),
> FEBRUARY 2000, "PORTABLE ELECTRONIC DEVICES" from the Australian Civil
> Aviation Safety Authority:
>   http://www.casa.gov.au/prod/avreg/newrules/download/ac/091%5F22.pdf
>
> In practice, Bluetooth's very low-power spread-spectrum transmitter would be
> unlikely to cause interference to an aircraft's systems. However, it would
> be unwise to encourage Bluetooth's use on airlines until this is accepted by
> airline safety authorities.
>
> PS: It is possible to use a transmitter in some aircraft. Particularly when
> it is a hot air balloon over Parliment and you have a Senator assisting
> you: http://www.tomw.net.au/nt/balloon.html
>
> PPS: More on wireless: http://www.tomw.net.au/2001/wwgw.html
>
> Tom Worthington FACS; Director, Tomw Communications Pty Ltd ABN: 17 088 714
> 309
> http://www.tomw.net.au; Vis.Prof AustralianNatlUniversity; Austrl. Computer
> Soc



For archives see: http://www.interesting-people.org/