In the real world, however, a lot of people forget about what is providing terrain clearance on their departure.
At a major airport, the SID gives you terrain clearance, at a standard 3.3% (unless specified otherwise on the chart). At, say 90 knots, that's a required vertical speed of 300 fpm.
At a typical bush aerodrome (say with an aid and approach) on a bad weather day with an IFR plan, many pilots take off into cloud (because they are "IFR") and climb out en route, not thinking about what is guaranteeing their terrain clearance up to the LSALT.
I'm amazed at how many very experienced people that I fly with who never give this a thought!
What about flying the reciprocal of an RNAV, or GPS/DME arrival? Simple solutions that give you a surveyed 3 degree clearance.
