I don't know of the K:M test. This is the research of which I am aware. http://www.cmu.edu/PR/releases06/060228_cellphone.html http://www.boeing.com/commercial/aeromagazine/aero_10/interfere_textonly.html http://www.spectrum.ieee.org/aerospace/aviation/unsafe-at-any-airspeed http://www.caa.co.uk/docs/33/CAPAP2003_03.PDF
There is clearly an increased risk, but there is little conclusive data on the magnitude of that risk. The Boeing document summarizes it succinctly. "The potential is great that PEDs [personal electronic devices] will continue to be blamed for some anomalies regardless of whether they are the true cause. As a result, regulatory agencies and operators continue to offer the current policy for PED use on airplanes as the best safety measure." Ted Eckert Compliance Engineer Microsoft Corporation ted.eck...@microsoft.com The opinions expressed are my own and do not necessarily reflect those of my employer. From: Gartman, Richard [mailto:rgart...@ti.com] Sent: Thursday, September 24, 2009 7:33 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: Article on "portable electronics" aboard airplanes The best reason I have heard from a flight attendant (this happened only once) for putting the computer away was " do you want a 5 pound projectile flying around the cabin if there is an incident". You cannot argue with that logic. Does any on have the report of the KLM/FCC cell phone test that was done in Phoenix several years back. As I hear the story, a KLM "Boeing" aircraft was filled with cell phones (one in each seat) and they all went active at the same time. The intent was to see if a plane loaded with cell phones could cause interruption to the aircrafts electronics. I am sure this group would enjoy that report. Have a great day W. Richard Gartman, MS, CSP From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Ken Javor Sent: Thursday, September 24, 2009 9:18 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: Article on "portable electronics" aboard airplanes While having stuff put away during take-off and landing makes sense, just as you say, protection of aircraft radio and navigation receivers is the primary driver. Paralleling control of rfi on the ground, the first such rfi control only applied to radios, because of local oscillators, and then later applied to digital electronics, because the clocks and their harmonics could radiate just like the radio's LO could. Ken Javor Phone: (256) 650-5261 > From: Nick Williams <nick.willi...@conformance.co.uk> > Date: Thu, 24 Sep 2009 15:02:55 +0100 > To: Ken Wyatt <k...@emc-seminars.com> > Cc: <EMC-PSTC@LISTSERV.IEEE.ORG> > Subject: Re: Article on "portable electronics" aboard airplanes > > I've always understood that, certainly so far as commercial airliners > are concerned, EMC was never really the issue. Far more to the point > is the fact that take off and landing are statistically the most > likely time for there to be an emergency which requires the > passengers to be paying attention to what the cabin attendants have > to say rather than listening to or fiddling with their personal > possessions. > > It also can't do any harm for the cabin not to be cluttered up with > laptops and other junk for people to trip over if you need to get > everyone off in a hurry. > > Nick. > > > > At 22:26 -0600 23/9/09, Ken Wyatt wrote: >> I thought I'd post this link to a semi-rant by one of the Gizmodo >> editors on the use of electronics aboard aircraft. He brings up some >> good points regarding the EMI properties of various gadgets. It's >> also interesting how he and other non-EMCers think on the whole >> subject. >> >> Has anyone on this list studied the emissions characteristics ("on" >> versus sleep mode) for various portable electronic products? >> >> I'd love to not be hassled when using my Bose headphones. >> >> http://gizmodo.com/5366128/giz-expla ns-how-to-fix-the-airlines-stupid-portab >> le-gadget-rules >> >> Regards, Ken >> ---------------------------------------------- >> Wyatt Technical Services, LLC >> 56 Aspen Dr. >> Woodland Park, CO 80863 >> > > - > ---------------------------------------------------------------- > This message is from the IEEE Product Safety Engineering Society emc-pstc > discussion list. To post a message to the list, send your e-mail to > <emc-p...@ieee.org> > > All emc-pstc postings are archived and searchable on the web at: > http://www.ieeecommunities.org/emc-pstc > Graphics (in well-used formats), large files, etc. can be posted to that URL. > > Website: http://www.ieee-pses.org/ > Instructions: http://listserv.ieee.org/request/user-guide.html > List rules: http://www.ieee-pses.org/listrules.html > > For help, send mail to the list administrators: > Scott Douglas <emcp...@socal.rr.com> > Mike Cantwell <mcantw...@ieee.org> > > For policy questions, send mail to: > Jim Bacher: <j.bac...@ieee.org> > David Heald: <dhe...@gmail.com> - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <emcp...@socal.rr.com> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com> - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. 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