Reaching out to our P2V cousins... read this: viewtopic.php?f=19&t=9264 All of us P2 (non-vision) guys are so new, we don't really know what's what yet but maybe someone here knows. So, do you hook it? And if you do, which way and where are you? And if you are tempted to reply with "magnetic declination", answer me this: Shouldn't the compass heading be adjusted for declination automatically once the home location is recorded? It's a simple lookup table based on LAT/LON. When I switch to ATTI, fly for a bit and then back to GPS, it stops! No more hook. So, did the Naza finally adjust the compass heading for declination like it was supposed to do? http://www.ngdc.noaa.gov/geomag/WMM/dat ... D_MERC.pdf I am in LA where the declination is 12 degrees. Anyone left of Colorado should be influenced by it enough to notice as should those in the Northeast. Those of you in UK/Europe won't notice it much.