Matches in DBpedia 2014 for { ?s <http://dbpedia.org/property/r2Number> ?o. }
- CFB_Cold_Lake r2Number "13".
- CFB_Comox r2Number "18".
- CFB_Gander r2Number "13".
- CFB_Goose_Bay r2Number "16".
- CFB_Greenwood r2Number "12".
- CFB_Moose_Jaw r2Number "11".
- CFB_Winnipeg r2Number "18".
- Cable_Head_Airpark r2Number "14".
- Caboolture_Airfield r2Number "6".
- Caen_–_Carpiquet_Airport r2Number "6".
- Caernarfon_Airport r2Number "7".
- Cairns_Army_Airfield r2Number "18".
- Cairo_International_Airport r2Number "5".
- Springbank_Airport r2Number "17".
- Calgary_International_Airport r2Number "11".
- Calhoun_County_Airport_(Texas) r2Number "5".
- Caloundra_Airport r2Number "12".
- Calverton_Executive_Airpark r2Number "5".
- Cam_Ranh_Air_Base r2Number "2".
- Cambridge_Aerodrome r2Number "14".
- Cambridge_Airport r2Number "5".
- Camden_Airport_(New_South_Wales) r2Number "10".
- Camden_East_Aerodrome r2Number "18".
- Camilo_Daza_International_Airport r2Number "16".
- Camp_Mackall r2Number "11".
- Camp_Marmal r2Number "6".
- Campbell_Airport r2Number "6".
- Campbell_Army_Airfield r2Number "18".
- Campbell_Field_Airport r2Number "14".
- Canadian_Forces_Base_Portage_la_Prairie r2Number "8".
- Canadian_Forces_Station_Ladner r2Number "12".
- Canberra_International_Airport r2Number "12".
- Cannes_–_Mandelieu_Airport r2Number "5".
- Cannon_Air_Force_Base r2Number "13".
- Cape_Cod_Airfield r2Number "17".
- Cape_Girardeau_Regional_Airport r2Number "2".
- Cape_May_Airport r2Number "10".
- Cape_Sarichef_Airport r2Number "16".
- Cape_Town_International_Airport r2Number "16".
- Capital_City_Airport_(Pennsylvania) r2Number "12".
- Capital_Region_International_Airport r2Number "10".
- Capitol_Airport r2Number "9".
- Capitán_de_Corbeta_Carlos_A._Curbelo_International_Airport r2Number "8".
- El_Dorado_Airport r2Number "15".
- Carcassonne_Airport r2Number "10".
- Caribou_Municipal_Airport r2Number "11".
- Carlisle_Lake_District_Airport r2Number "7".
- Carlisle_Municipal_Airport r2Number "18".
- Carnarvon_Airport_(South_Africa) r2Number "12".
- Carnarvon_Airport_(Western_Australia) r2Number "18".
- Carp_Airport r2Number "4".
- Carrasco_International_Airport r2Number "6".
- Carrizozo_Municipal_Airport r2Number "15".
- Bishell's_Airport r2Number "16".
- Cartierville_Airport r2Number "10".
- Casement_Aerodrome r2Number "11".
- Casper–Natrona_County_International_Airport r2Number "8".
- Castle_Bromwich_Aerodrome r2Number "0".
- Cattaraugus_County-Olean_Airport r2Number "16".
- Cauquenes_Airport r2Number "9".
- Cavern_City_Air_Terminal r2Number "14".
- Cecil_Airport r2Number "9".
- Cedar_City_Regional_Airport r2Number "8".
- Ceduna_Airport r2Number "17".
- Centennial_Airport r2Number "17".
- Central_Illinois_Regional_Airport r2Number "11".
- Central_Maine_Airport_of_Norridgewock r2Number "15".
- Central_Nebraska_Regional_Airport r2Number "13".
- Central_Wisconsin_Airport r2Number "17".
- James_T._Field_Memorial_Aerodrome r2Number "16".
- Cerfontaine_Airport r2Number "12".
- Chadron_Municipal_Airport r2Number "11".
- Chalgrove_Airfield r2Number "13".
- Chalon_–_Champforgeuil_Airport r2Number "17".
- Chamberlain_USFS_Airport r2Number "15".
- Chambers_County_Airport r2Number "17".
- Chambéry_Aerodrome r2Number "15".
- Chambéry_Airport r2Number "18".
- Chan_Gurney_Municipal_Airport r2Number "13".
- Chandler_Municipal_Airport r2Number "4".
- Changi_Air_Base r2Number "2".
- Channel_Islands_Air_National_Guard_Station r2Number "9".
- Chanute_Martin_Johnson_Airport r2Number "8".
- Chapin_Field r2Number "7".
- Chapleau_Airport r2Number "5".
- Charles_B._Wheeler_Downtown_Airport r2Number "3".
- Charles_M._Schulz–Sonoma_County_Airport r2Number "14".
- Charles_Prince_Airport r2Number "14".
- Charles_W._Baker_Airport r2Number "18".
- Charles_de_Gaulle_Airport r2Number "8".
- Charleston_Air_National_Guard_Base r2Number "15".
- Charleston_Executive_Airport r2Number "4".
- Charleston_Field r2Number "15".
- Charleston_International_Airport r2Number "15".
- Charleville_Airport r2Number "18".
- Charlevoix_Municipal_Airport r2Number "9".
- Charlotte_Air_National_Guard_Base r2Number "18".
- Charlotte_Amalie_Harbor_Seaplane_Base r2Number "N/S".
- Charlotte_Douglas_International_Airport r2Number "18".
- Charlottetown_Airport r2Number "10".