BOAC:
Aterpster - I think the poster means 'conventional' as in not using RNAV waypoints, but VOR Rad/D and NDB. He/she was not asking about LNAV. Have a look at a chart?
Because he mentioned RNAV overlay, my point is all the ground-based SIDs are coded in today's LNAV systems as LNAV departures. As an example:
