You're probably seeing more JFK
activity for NAO because they are flying more, and their fleet is a smidge larger. According to the World Air Holdings 10K for 2005 (they acquired NAO in 2005), it seems to say that their utilization is up substantially. NAO had been doing a good deal of flying from the West Coast to Hawaii, thus tying up a couple of its aircraft out there, but that ended in, I think, September. Since then, those aircraft have been redeployed to military charter and ad-hoc, track, and ACMI commercial charter, which probably makes them see the East Coast more often. You'll see many of their military flights moving from Europe and points downstream to various locations in the USA, including DFW
. Sometimes, rather than refuel at Gander or Bangor, NAO will route those flights through JFK
, their home base, where it is presumably easier to do maintenance and change crews.
You're also seeing more of them at JFK
because they are operating subservice for Air Jamaica during the summer. If you look at their flight tracker, many of the flights shown aren't flown with NAO flight numbers. The flights to Montego Bay and St. Georges are Air Jamaica flights, which benefit from using the NAO 757 rather than the Air Jamaica A320 or (worse) the A321 on those stage lengths, because they often had to leave bags and cargo behind. The Flights to Georgetown Guyana and points in Africa, on the other hand, are flown as NAO flights. Even this will increase when the Lagos, Nigeria flights come on later in the year. However, I believe that when DL
starts flying JFK
(which is one of NAO's present routes, one it recently developed), the NAO service on that route may see lower loads and might have to go bye-bye. We'll see.
The rest of the flights that you regularly see (say to Trinidad and Aruba) are, I believe, track charter flights for vacation operators that used to be handled by Transmeridien before it folded. Some of the Transmeridien execs moved over to World Air Holdings, and so may have influenced some of their customers to come over to NAO. You'll also see some ad hoc charters for various purposes cropping up from time to time. The White House press corps comes to mind, for example. There's a somewhat-dated history of the airline on their web site at www.flynaa.com
Hope this helps.
PS If you didn't know, I think that their fleet now has 4 767-300ER and 5 757-200 aircraft, all ETOPS-certified.
[Edited 2006-07-10 06:40:36]