 The aircraft in the opening and closing credits (N121PB) is still in  use with Cape Air Airlines of Hyannis, Massachusetts. One of Cape  Airs primary destinations in its New England operation (they also  operate in Florida, the Caribbean, and Micronesia) is, in fact,  Nantucket. This particular aircraft exclusively serves the New  England market, so on any given day it is probably flying in and out  of Nantucket. When filmed for the credits, 121PB was in the livery  of the now