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#11
October 29th 15, 08:03 PM
posted to rec.aviation.soaring
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Alternative magnetic compass
On Thursday, October 29, 2015 at 11:10:28 AM UTC-7, Dave Nadler wrote:
On Thursday, October 29, 2015 at 1:30:07 PM UTC-4, Jonathan St. Cloud wrote: I have three gps' in my bird... Shocking. Time to upgrade. Minimum equipment: PowerFlarm Logger#2 AHRS w/GPS Personal tracker 406ELT w/GPS iPhone w/GPS Obviously you're way behind! And probably not enough batteries either ;-) I have 5: Air Avionics ISU PowerFlarm iPhone 6+ used for iGlide iPhone 5s used for cell phone Delorme Inreach Nevertheless, in the unlikely event of an EMP or the more likely event of GPS interference/unavailability, none will work. But I have never flown a compass course in a glider. In VFR, you don't need it; in IFR, it is insufficient without an AHRS, and then you don't need it. Conclusion: you don't need it. 
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