Old Smokey,
A couple of questions –if you’re up to it.
Would I be correct in saying if after, I have got the polygon of obstacles, if I pick the most limiting I will clear all other obstacles? (With in the surveyed area)
Quote:-
“One very important final consideration in constructing an Obstacle Polygon is that for all Obstacles Clear Gradients published ABOVE the lowest (1.6%), all obstacles will now be considered EXCEPT for a possible more distant obstacle generating the lowest published OCG (1.6%).”
My understanding is that the above still only applies within the surveyed area? At this stage I am not concerned about out of the surveyed area.
As an aside:-
I do remember back in the F27 days if you ran thru the segments as per ANO / (CAO) requirements to 1500’ (given min. cert. climb gradients for the a/c) then the distance from the aerodrome at which you achieve 1500’ was quite large! Well outside the surveyed area. Therefore SE ‘Escape procedures” to stop you hitting stuff!! (Outside the surveyed area)
Cheers
SRU