usedtajump 1 #26 July 16, 2004 Oh, I carry earplugs and/or a CD player when flying the airlines for noise blockage, when necessary. I think I'll get a set of speakers for the CD player so I can be just as annoying as compulsive cell phone users.The older I get the less I care who I piss off. Quote Share this post Link to post Share on other sites
Icon134 0 #27 July 16, 2004 Quoteoops....cause i have made and recieved calls from under canopy I saw something in Pop Sci about it.. in december Quote A reader inquires: On a flight recently, I left my cellphone on by accident, and yet the plane did not fall out of the sky. Aren't "personal electronic devices" supposed to be a danger to cockpit controls? It's unlikely, but electromagnetic interference from your personal electronic device, or PED, could disrupt the plane's avionics in a number of ways. This is because the internal circuits of PEDs generate small magnetic fields, and these changing magnetic fields could create a current -- however small -- in nearby wires. Now imagine that one of those wires is a cable that sends electric signals from the rudder to the cockpit. When you turn your portable CD player on and off, its magnetic field changes, thereby inducing additional current in the cable and altering the rudder signal. If you're at cruising altitude, this might not be much of a problem, but if you're coming in for a landing, it could be disastrous. In addition, some PEDs -- cellphones, laptops with wireless Internet cards, etc. -- are designed to emit electromagnetic waves. Their signals are set to specific wavelengths, nowhere near the wavelengths reserved for air navigation. But your laptop's frequency might combine with a neighboring PDA's emissions to create new, more powerful frequencies that could, worst-case scenario, be on the aviation bandwidth. Presto, your pilot loses a navigational aid. No accidents have been attributed to PED interference and studies have concluded that the risk is slight, but it is the suspected cause of a small number of bizarre events in the cockpit: an altimeter suddenly becoming useless, an autopilot disconnecting or initiating a roll for no apparent reason, a display blanking out. In some of these incidents, the flight crew has been able to establish a strong correlation between turning the PED off and on and the disappearance and return of the anomaly. But because of the complexity of the variables, engineers cannot reliably duplicate these incidents and pin down their causes. So airlines will likely continue their better-safe-than-really-sorry approach: Devices are allowed at cruising altitude only if deemed safe by individual airlines; takeoff and landing remain sacrosanct electronics-free zones. Cellphones, a special case, are never allowed on in the air -- not because they may interfere with navigation, but because they may disrupt cell service on the ground. The U.S. cellular infrastructure is engineered to handle calls coming from slow-moving ground-based sources. When you place a call from a car, you're in sight of, say, four cell towers at a time. These towers decide among them which is receiving the strongest signal from you at any given moment, and hand off your call from one to another as you travel. In the air, you're likely in sight of hundreds of towers at a time. The system is not set up for hundreds of towers to communicate, and the standing army of poor muddled towers may simply drop their ground calls to accept your call. The airlines don't care about dropped calls on the ground, but the FCC does, and so extends its regulatory power quite literally into the skies. You're probably fine under canopy... not really high enough to cause a problem... ScottLivin' on the Edge... sleeping with my rigger's wife... Quote Share this post Link to post Share on other sites
diverdriver 5 #28 July 17, 2004 Can you hear me now? Quote Share this post Link to post Share on other sites
wendybird 0 #29 July 17, 2004 QuoteCan you hear me now? Hard not to. You *never* shut up! (is this the part where I'm supposed to say something like ) Wendy "Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used u Quote Share this post Link to post Share on other sites
diverdriver 5 #30 July 17, 2004 QuoteQuoteCan you hear me now? Hard not to. You *never* shut up! (is this the part where I'm supposed to say something like ) No, it's the part where you say "How would like to have me now?" Quote Share this post Link to post Share on other sites
AirMail 0 #31 July 18, 2004 ATTABOY Bill. http://story.news.yahoo.com/news?tmpl=story&cid=528&e=4&u=/ap/20040717/ap_on_hi_te/cell_phones_in_flight-- It's never too late to have a happy childhood. Postal Rodriguez, Muff 3342 Quote Share this post Link to post Share on other sites
kallend 2,027 #32 July 18, 2004 Why couldn't you work on something useful instead?... The only sure way to survive a canopy collision is not to have one. Quote Share this post Link to post Share on other sites
billvon 2,998 #33 July 18, 2004 >Why couldn't you work on something useful instead? Well, the pet rock and Chia Pet had already been done, so . . . Quote Share this post Link to post Share on other sites
ianmdrennan 2 #34 July 18, 2004 No, not at all. I just have yet to find someone elses life so interesting that I just love to hear their useless conversations.Performance Designs Factory Team Quote Share this post Link to post Share on other sites
larsrulz 0 #35 July 19, 2004 QuoteWe made the first legal cellphone calls from an aircraft in flight. The FAA only prohibits cell phone usage on commercial airlines. Corporate or private aircraft are excempt from this rule. None-the-less, what altitude was this at? Would this system allow any call to be made, or do they have to go through this onboard system? i.e. was the test to see if the cellphone calls are dangerous to flight or just to see if your system works? I got a strong urge to fly, but I got no where to fly to. -PF Quote Share this post Link to post Share on other sites
billvon 2,998 #36 July 19, 2004 >None-the-less, what altitude was this at? 25,000 - 30,000 feet. >Would this system allow any call to be made, or do they have to go >through this onboard system? All calls went through the aircraft's system. >was the test to see if the cellphone calls are dangerous to flight or just to > see if your system works? We did a LOT of testing before this flight, both ground and air, to ensure that the system was safe to use during flight. Hey, we were on the plane too! We had a vested interest in ensuring a safe flight. Quote Share this post Link to post Share on other sites
pilotdave 0 #37 July 19, 2004 QuoteThe FAA only prohibits cell phone usage on commercial airlines. Corporate or private aircraft are excempt from this rule. It's an FCC rule, not an FAA rule. Cell phones (except those approved by the FCC) are illegal to use in any aircraft in flight. Now under canopy... hmmmm... Dave Quote Share this post Link to post Share on other sites
kallend 2,027 #38 July 19, 2004 QuoteQuoteThe FAA only prohibits cell phone usage on commercial airlines. Corporate or private aircraft are excempt from this rule. It's an FCC rule, not an FAA rule. Cell phones (except those approved by the FCC) are illegal to use in any aircraft in flight. Now under canopy... hmmmm... Dave The courts have ruled (in a BASE jumping case) that parachutes are not aircraft.... The only sure way to survive a canopy collision is not to have one. Quote Share this post Link to post Share on other sites
pilotdave 0 #39 July 19, 2004 Yeah, but I don't remember the wording of that FCC regulation. I came across it a couple years ago when I was getting a lot of telemarketing calls on my cellphone. The rule against that is nearby. I had it printed out and ready to quote to the next telemarketer that called me. Dave Quote Share this post Link to post Share on other sites
Darius11 12 #40 July 19, 2004 Good job Man. Have fun on fire islandI'd rather be hated for who I am, than loved for who I am not." - Kurt Cobain Quote Share this post Link to post Share on other sites
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