Some additional info following Jim's points:
http://easa.europa.eu/system/files/d...1587(b)(6).pdf
I have my doubts, however, that there are sufficient visual reference to reject vertically from this height to an elevated helipad, let alone higher).
The S92 graphs go to 300 ft, and it's a vertical procedure - though one could argue that the geometry is such that to maintain the sight picture there is a default movement back and left.