Union County Airport is a public use airport in Union County, Ohio, United States. It is owned by the Union County Airport Authority and located one nautical mile (2 km) southeast of the central business district of Marysville, Ohio. This airport is included in the National Plan of Integrated Airport Systems for 2011–2015, which categorized it as a general aviation facility. Although most U.S. airports use the same three-letter location identifier for the FAA and IATA, this airport is assigned MRT by the FAA, but has no designation from the IATA (which assigned MRT to Moroak, Northern Territory, Australia).

Facilities and aircraft

Facilities

Union County Airport covers an area of 54 acres (22 ha) at an elevation of 1,021 feet (311 m) above mean sea level. It has two runways: runway 9/27 is paved with an asphalt surface and measures 4,218 by 75 feet (1,286 x 23 m); runway 8/26 is made of turf and measures 2702 x 81 ft (824 x 25 m). The airport has a fixed-base operator that sells fuel and offers services such as general maintenance, hangaring, courtesy transportation, conference rooms, a crew lounge, and more. In 2023, the airport received nearly $100,000 for its Airport Improvement Program. The money will be used to construct, modify, improve, or rehabilitate a hangar at the airport.

Aircraft

For the 12-month period ending June 5, 2023, the airport had 32,850 aircraft operations, an average of 90 per day: 90% general aviation, 8% military, and 2% air taxi. At that time there were 57 aircraft based at this airport: 55 airplanes, including 54 single-engine and 1 multi-engine; 1 jet; and 1 glider.

Events

Sunday BBQs are held regularly at the Union County Airport. There is a chapter of the experimental aircraft association at the airport. The chapter hosts a number of events, including Young Eagles airplane rides. The airport is host to the annual All Ohio Balloon Festival, which showcases hot air balloons from around the world and their designs. The event hosts live music over three days. There are also booths for food and local vendors, skydiving displays, airplane rides, and animals for adoption. The airport is home to a PT-26 wing sponsored by the Commemorative Air Force.

Accidents and incidents