ATS Route numbering

[keithl]

I see W5D has been renumbered N560D. What does this signify? Where do I find the decode of Route numbers - I'll admit this is a lazy approach, but I'm a bit busy right now and would appreciate someone directing me to the correct publication, rather than browzing my entire bookcase.

[Rene Pedersen]

You can find the information in ICAO Annex 11 appendix 1.

Basically the W to N prefix changes the route from being a non area-nav route to an area-nav route.

René

[enicalyth]

and the d means

D means that portion has an ATS advisory service only.

[keithl]

Much obliged.