Might be a stupid question, but I've heard several times in the KJFK feeds that they close down Robinsville in the NY sector for a short period of time, resulting in delayed departures for some flights with vectors through RBV, and my question is, why do they restrict it? Does it have to do with landing traffic on airfields nearby? I'm a newbie so I don't have too much knowledge about this. Would be interesting to hear an answer
It can usually be due to traffic saturation in the New York Center sectors surrounding Robbinsville VOR - Sector 55 in particular. You'll hear it more often in the summer when they "shut down" exits that may have convective/mesoscale areas of storms around exits meaning the Command Center hands it to the Centers who hands it to the Tracon which then obviously lays in the hands of the ATCT to have to increase the Miles In Trail in which they are receiving aircraft over the gate/exit. Those are usually the two main reasons - Im sure other people will add a few more reasons they know.