john_tullamarine,
Yes indeed it doesn’t matter if the take off performance isn’t field limited. It just shifts towards the actual TOD, reducing the required climb out gradient. However it makes sense to do it this way if there’s no problem with the whole range of take off weight up to MAX. If there’s a problem with upper range take off weights, a balanced field take off performance calculation is the preferred method, provided there’s a clearway.
Cloud surfer, just to clarify it. There might have been a misunderstanding.
Regardless of the navigation method you choose, you, as an operator, must consider all obstacles within the funnel. You must ensure as well, regardless of nav. Method, that you will clear all obstacles by 35 ft vertical distance, based on NET gradient and one engine case for given weight and environmental conditions.
The best way to do it in my opinion:
NO VFR DEP, ONLY IFR.
USAGE OF RTOM, if available.
Cheers.