Hey guys, I am going to be flying near a volcano on wednesday, and I did some research into the lava that surrounds it. It is mostly basaltic, which has some iron oxides in it, and are known to be weakly magnetic. Do you think something like this would prevent my P3P from taking off from the ground as there will be some iron in the soil content? "Compass error, please fix" And what would be the effects upon my P3P and its compass and flying ability being in the air around a weakly magnetic lava field? Could it get confused and just drop out of the sky? Think left is forward? Not matter at all 400 ft up? Should I do a compass caliberation on site to get it adjusted to the magnetic field, or somewhere outside of the lava field? An interesting fact I learned is that when some lava cools, it holds within (the magnetic iron part) the magnetic field of the earth at the time it was created. Which can potentially cause different lava field areas to have different magnetic orientation/ interferences, however most of the lava area has been exposed to lava in the past 100 years, so there should not be much difference in magnetic orientation in the surface level of the ground. Thanks for your insight.