Originally Posted by
john_tullamarine
maybe I will have to chat with our company perf engineer
That would be the preferred approach for a specific aircraft and analysis protocol. Doesn't surprise me, though.
Asked and found out.
The height provided in the detailed analysis was additional to net height, its called reference zero. So that was 19ft above the net height of 35ft.
Another question I was thinking is, if the takeoff analysis stops at 1500ft, what happens if you lose an engine above 1500ft.
Do you have to switch to engine out, or you can continue to the SID? Technically you would continue to the SID, but if there is terrain I dont think its wise to do so. Better safe than sorry imho.