We saw an American 767 land today with flight number 9421, which woukd seem to indicate a chartered flight. They came from Baltimore and sre headed back to JFK on flight number 9741 or thereabouts. From BSV we couldn't quite make out how many pax deplaned nor how many enplaned for departure. Does anyone know what it might have been?

Don't know what was going on, but I have to assume it was some kind of a charter, as there are no non-stops from Baltimore to SXM on a regularly scheduled flight (on any airline). (At least, not since US Air stopped doing that non stop route, maybe 15 years ago.)

You are correct on your flight numbers and cities involved but other than seeing the flight is delayed leaving SXM, I have no idea what this would be about. The flights are listed on the AA site but that was all I could find.