after upgrading to 5.1 and then to 5.1.1 (not sure there is any relation) the compass shows a funny behaviour. when turning on the EFIS, doesnt matter if with external or internal power, the compass tape shakes badly like there is an alternate magnetic field close to it (there is none, i have tried this with all airplane power off) then the "shimmy" stops when the altitude tape appears but the heading indication is not reliable. in flight sometimes it varies of 40 or 50 degrees, while at times it seems ok.
i will later reload the 5.0 firmware to see if it makes any difference.
wind aloft indication is also badly out, with readings approaching 50% of the cruise speed or more.
i will later reload the 5.0 firmware to see if it makes any difference.
wind aloft indication is also badly out, with readings approaching 50% of the cruise speed or more.