I operate a system with GPS and three IRUs so the error is quite small - maybe 0.03N. Maybe less.
Then no one can easily work out where you are.
Mr Eclan, you seem to contradict yourself, surely if your navigation equipment is accurate to 0.3NM, then everybody will know exactly where you are to within 0.3NM!
Why would 'the feds' frown upon the concept?
As I eluded to earlier,without actually saying it, it is normal to go a lot further off track for weather avoidance! The three tools ATCers use to separate aircraft are altitude, distance and closing angle, surely pilots should use the same tools when required?