b'THE MAC RELIEVER AIRPORTSMACs six general aviation reliever airports are open for public usebased aircraft. The operations totals are obtained from the FAA for 24 hours per day. Aircraft operators must choose an airport at whichMAC reliever airports with an air traffic control tower. For the two to base their aircraft. Airports in Minnesota are required to submit toreliever airports without an air traffic control tower (LVN and 21D), the State a report that identifies the aircraft based at their facilities forthe operations totals are estimated through various methods and 180 days or more. The tables below show the 2018 and 2019 relieveravailable data.airport operations and reliever airportReliever Airport OperationsAirportLVN21DMICSTPFCMANEANNUAL TOTAL201832,98631,69338,10940,11688,76275,465307,131 201929,83531,20841,54140,934104,40571,740319,663YY Comparison2019-2018(3,151)(485)3,43281815,643(3,725)12,532Source: MAC Airfield Development, MAC Reliever Airports, and FAA Air Traffic Operations NetworkReliever Airports Based Aircraft AirportLVN21DMICSTPFCMANE ANNUAL TOTAL2018142189168903643811,334 20191411911651033693781,347 YY Comparison2019-2018(1)2(3)135(3)13 Source: MAC Airfield Development and MAC Reliever AirportsLVN = Airlake | 21D = Lake Elmo | MIC = Crystal | STP = St. Paul Downtown | FCM = Flying Cloud | ANE = Anoka County-Blainexi'