Airports of the world

4NK1 B-Ville Airpark · Baldwinsville, United States 4NK2 Tracy Field · Greenwich, United States 4NK3 Evans Airways Airport · Evans, United States 4NK4 Woodford Airfield · Fabius, United States 4NK5 Harvs Airport · Macedon, United States 4NY0 Mountain View Airpark · Beekmantown, United States 4NY1 Orange Poultry Farm Airport · Chester, United States 4NY4 Cross' Farm Airport · Delmar, United States 4NY8 Harris Hill Gliderport · Elmira, United States 4O1 Snyder Airport · Snyder, United States 4O7 Decker Field · Meno, United States 4OA8 Bowman Airport · Piqua, United States 4OH1 Sky Haven Airport · Madison, United States 4OH3 Bieber Field · North Lima, United States 4OH8 Huffman Farm Airport · Archbold, United States 4OI8 Brocker Field · Canfield, United States 4OI9 Baisden Airport · Coalton, United States 4OK4 Low Pass Airport · Tuttle, United States 4OK5 Newman Farm Airport · Velma, United States 4OK8 Justice Field · Stillwater, United States 4OR0 Springbrook Airport · Rogue River, United States 4OR3 Lambert Field · Albany, United States 4OR4 Schrock Airport · Corvallis, United States 4OR5 Fly 'N' W Airport · Salem, United States 4OR6 Auberge Des Fleurs Airport · Sandy, United States 4OR7 Lusardi Field · Salem, United States 4OR8 Wagoner Airport · Salem, United States 4PA1 Sauers-Haven Airport · New Berlin, United States 4PA5 Ponderosa Airport · Lock Haven, United States 4PA6 Hiawatha Airport · Starlight, United States 4PA8 Russo Airstrip · Pipersville, United States 4PN0 Flying M Ranch Airport · Grove City, United States 4PN7 Merritt Field · Sonestown, United States 4PS3 Paraport Ultralight Flightpark · Warren, United States 4PS4 Mountain Top Airport · Thompson, United States 4PS5 Muddy Creek Airport · Carmichaels, United States 4R6 Milnor Municipal Airport · Milnor, United States 4S4 Skyport Airport · Cornelius, United States 4S5 St Thomas Municipal Airport · St Thomas, United States 4S6 Tieton State Airport · Rimrock, United States 4S7 Malin Airport · Malin, United States 4SC4 Davis Field · Liberty, United States 4SC7 Wexford Landing Airport · Aiken, United States 4SD4 Dan's Airport · Rapid City, United States 4TA0 Praire Aire Field · Damon, United States 4TA1 Warschun Ranch Airport · Denton, United States 4TA2 V-Bar Airport · China Spring, United States 4TA3 Costello Island Inc Airport · Graford, United States 4TA4 Pea Patch Airport · Hempstead, United States 4TA5 Lucky G Airport · Holliday, United States