Another example where the plotting chart is mandatory would be going from Seattle to Tahiti. You cross all the ATS routes during this leg and doing so without plotting your track plus all the tracks you cross during this leg should be mandatory and anything less is almost criminal. Sort of like crossing a major highway without looking. I for one would like to see the OpsSpecs of those operators that are operating in an oceanic environment that do not require plotting. I know enough FAA International Ops Inspectors that I doubt that they would ever sign off on a deletion of this practice.