by my simple trig that's 3 degs at 60 nm
Hi rudder,
a small doubt's arising: should I be checking the NAV accuracy throughout the approach (eg. GPS primary lost), will I have enough time to apply the 60-to-1 rule in determining whether the distance between the NAV/FM bearing is within the max limit or not ? Being the probability for a discrepancy in bearing only not very usual and should discr. be unacceptable, at that point, I'd take FM position as unaccurate thus continuing raw data ... right ?
Thanks,
fredgrav