RNP 10 requirement

[Redballoon]

Hello everyone. This question is regarding requirement of GPS to fly RNP 10. Would like to know if any one can further explain this. Need some help.. thank you.

1 GPS : Required for flight outside radio navaid coverage, if not, 6.2h IRS ground alignment or 5.7h last FM radio update

-A330-

[safelife]

You can comply with RNP10, as long as you have GPS PRIMARY, or IRS navigation for not longer than the duration stated.
Otherwise the IRS drift could be too large.