I42
I know well this helipad...and I slightly disagree with you regarding the wind..it's very often coming from behind the structure, and gives some kind of "interesting" turbulence there ...just check the Vietnamese flag on it...
Moreover, the weight limitation is 3T...which means, you have to fly a 355 or 135 or other light medium...
And yes it's forbidden, but MoD approved it already and CAAV worked on a corridor we proposed them...
I'm not a world champion regarding the "landing limitations", but I would suggest to check it very carefully first, and I think it could come with a maximum wind velocity/sector limitation, as per on frigates or other helipads...
TH