I don't understand why I never seem to see planes departing on 31R, which from what I understand is because of noise abatement.
There is nothing there for which to abate noise!!!!
LGA has houses all over near it, and they only divert traffic when the stuck up rich people at the US Open whine about it in late August.
What's the deal with JFK departures and noise abatement? Why 31L and not 31R?