About 2 years ago, the 70 was doing it and it turned out the 70 didn't have the required paperwork done with the Feds to do that flight. It wasn't an over water thing and I'm not sure exactly what it was, but they ended up having to downsize it for like 2 months.

I ferried a plane there to do NAS to JFK (actually there was another 50 down there and they needed to extra seats, so we followed eachother) and did a couple other ones like that while I was on reserve.