Seletar is Singapore's dedicated private-aviation airfield and handles the majority of regional traffic. Changi accepts BBJ and ACJ metal and is the choice for ULR arrivals that require wider apron clearances. The F1 Grand Prix in the third week of September generates the single largest traffic concentration of the year, with parking booking opening the preceding December and closing within eight weeks. Jet Aviation, Hawker Pacific, and ExecuJet Haite each operate full-service FBOs at Seletar. From Singapore, the natural onward routings are Jakarta, Bali, Hong Kong, Tokyo, and westward to Mumbai.