When I used to fly through SXM AF used to fly the 74's from Paris to St Martin then down to Guadeloupe before doing the crossing. We were performance limited on the MD83 from SXM so I really don't see how the 343 could make the crossing. I'm on the Bus now and my previous carrier used to do the crossing to LHR and MAN on the 343 via BGI, UVF or ANU. Barbados, St Lucia and Antigua respectively.