I know that typically RNAV navigation involves a list of waypoints, and the aircraft simply flies from one point to the next. What I'm curious about is if a procedure could be developed (as a special engine out procedure, for example) that would be something like
Depart on runway heading. At distance 2nm from FOBAR waypoint, turn direct to FOBAR. Track radial 090 outbound from FOBAR.
Would the instruments in an RNAV equipped aircraft allow a procedure like that to be flown? Would it require a certain system (say only from a certain manufacturer), or require additional systems (like an FMS)?
CLARIFICATION FROM COMMENTS: I understand that a procedure like the one above would not be typical or preferred, but in very hazardous terrain (for example) with no real other options, would the pilot simply have the tools available to be able to fly it?
If it matters, I'm particularly interested in commercial aviation and answers that would be applicable to any airport worldwide.