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Over the last 15 years or so our instrument panels
have become much more interesting, displaying vastly more information than previously. During the same period there has been a significant increase in the number of pilots with the skill (and willingness) to soar very close to other sailplanes. The accidents are caused by our willingness to fly in a close proximity to other gliders, that produces the level of risk that produces the accidents we have. A gadget that worked, if such were possible, would probably have us all flying closer and closer together until we got back up to the same (maximum acceptable) perceived level of risk. At 23:54 01 May 2004, Mark James Boyd wrote: In article , Mike, The FLARM concept has been painfully obvious, from a technology point of view, since the introduction of low-cost GPS. In fact, it could even have been partially implemented with LORAN, but those receivers were expensive and were never widely deployed. Unfortunately, FLARM-type collision avoidance is only going to work if it's deployed to virtually all aircraft, which would require the authorities to insist on it. This won't happen: ADS-B is the chosen approach. Sort of important to this approach is 'is it worth it?' and 'does the solution cause more death than the problem?' Kind of like parachutes. If the added weight increases the marginal stall speed to the point it causes .001% more fatal accidents, but only saves .0092% more pilots in breakups, then it was a bad idea. Of course it's extremely unlikely anyone can prove the extra 15 pounds was the cause of fatality, right? How many added fatalities will there be because the pilot is distracted by the bleepy noise, even though the aircraft would have missed by six inches if neither pilot was aware? How many will die because of the distraction itself? This is just too hard to calculate. Huge numbers (hours of flight)multiplied by tiny estimated numbers (risk of midair) makes for a tough comparison. Now instead of risk use cost in $$$$s to implement, and the true cost vs. benefit is very difficult to estimate correctly... -- ------------+ Mark Boyd Avenal, California, USA |
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