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#1
October 28th 15, 02:32 PM
posted to rec.aviation.soaring
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Alternative magnetic compass
A sailplane's Flight Manual usually requires a magnetic compass (or an aviation compass)as minimum equipment. Well, panel space has become less available and you are seeing fewer sailplanes with panel or glare-shield mounted 2.25 Airpath C2xxx or PAI-700 aircraft specific compasses.
Anyone have a "point" to an off panel compass that might meet FAA scrunity? Unfortunately the Cook compass manufactured by COBB-SLATER Instruments Co. Ltd is no longer available. http://compassmuseum.com/aero/aero.htm#COOK Probably, a magnetic compass is the last instrument used by a competition pilot. Most competition sailplanes have 3 or more separate GPS engines and it is very simple to have them on independent battery sources. What would be the "penalty" if your sailplane failed a FAA "courtesy" ramp inspection because it lacked a magnetic compass? Does a F-35 Lighting II joint strike fighter has a magnetic compass? 
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