diff --git a/Util/MachineProductCfg.py b/Util/MachineProductCfg.py
index b6d4970..6549eb2 100644
--- a/Util/MachineProductCfg.py
+++ b/Util/MachineProductCfg.py
@@ -50,9 +50,90 @@ def getTideStations():
 
 def getAirportCodes():
     """ Returns all of the airport identifiers present in the MachineProductCfg """
-    airports = []
+    airports = [
+        'ATL',
+        'LAX',
+        'ORD',
+        'DFW',
+        'JFK',
+        'DEN',
+        'SFO',
+        'CLT',
+        'LAS',
+        'PHX',
+        'IAH',
+        'MIA',
+        'SEA',
+        'EWR',
+        'MCO',
+        'MSP',
+        'DTW',
+        'BOS',
+        'PHL',
+        'LGA',
+        'FLL',
+        'BWI',
+        'IAD',
+        'MDW',
+        'SLC',
+        'DCA',
+        'HNL',
+        'SAN',
+        'TPA',
+        'PDX',
+        'STL',
+        'HOU',
+        'BNA',
+        'AUS',
+        'OAK',
+        'MSY',
+        'RDU',
+        'SJC',
+        'SNA',
+        'DAL',
+        'SMF',
+        'SAT',
+        'RSW',
+        'PIT',
+        'CLE',
+        'IND',
+        'MKE',
+        'CMH',
+        'OGG',
+        'PBI',
+        'BDL',
+        'CVG',
+        'JAX',
+        'ANC',
+        'BUF',
+        'ABQ',
+        'ONT',
+        'OMA',
+        'BUR',
+        'OKC',
+        'MEM',
+        'PVD',
+        'RIC',
+        'SDF',
+        'RNO',
+        'TUS',
+        'CHS',
+        'ORF',
+        'PWM',
+        'GRR',
+        'BHM',
+        'LIT',
+        'DSM',
+        'FAR',
+        'FSD',
+        'ICT',
+        'LBB',
+        'BIL',
+        'BOI',
+        'GEG'
+    ]
     for i in data['Config']['ConfigDef']['ConfigItems']['ConfigItem']:
-        if "Airport" in i['@key'] and i['@value'] != "":
+        if "Airport" in i['@key'] and i['@value'] != "" and not i['@value'] in airports:
             # Split the string up
             airports.append(i['@value'].split("_")[2])