To meet the demands of Pan Am, the structure of the route network (which had not seen any major modifications during the time as Ransome Airlines) saw a number of profound changes. In November 1987, an initial number of two ATRs was used to open up a regional network at Tegel Airport in West Berlin, competing with Berlin European UK (which had been set up in 1986). Also, feeder flights into Miami International Airport (during 1990 and 1991, focusing on the Bahamas) and Los Angeles International Airport were maintained. Throughout its history, the maintenance base at Northeast Philadelphia Airport was kept, though.