Clinton County Army Air Field

Wilmington Air Park
USGS aerial image as of 22 March 1994 (only one runway at the time)
IATA: ILN ICAO: KILN FAA LID: ILN
Summary
Airport type	Public
Owner	Clinton County Port Authority
Location	Wilmington, Ohio
Elevation AMSL	1,077 ft / 328 m
Coordinates	39°25′41″N 083°47′32″W / 39.42806°N 83.79222°W / 39.42806; -83.79222
Runways
Direction Length Surface ft m 4L/22R 10,701 3,262 Concrete 4R/22L 9,000 2,743 Concrete
Statistics (2006)
Aircraft operations 71,000
Source: Federal Aviation Administration

Wilmington Air Park (IATA: ILN, ICAO: KILN, FAA LID: ILN) is a public-use airport located two nautical miles (3.7 km) southeast of the central business district of Wilmington, a city in Clinton County, Ohio, United States. While DHL had privately owned the property while operating from the facility, the company agreed to donate the property to the Clinton County Port Authority.

The airport was formerly known as Clinton County Air Force Base.

The airport opened in 1929 and a small hangar was built in 1930. The landing strip was approved by the Civil Works Administration in 1933. In 1940, the Civil Aeronautics Authority took control of Wilmington Airport for use as an emergency landing field. In 1942, the United States Army Air Forces took over the airport, renaming it Clinton County Army Air Field. With the establishment of an independent U.S. Air Force in 1947, the installation was renamed Clinton County Air Force Base and primarily supported Air Force Reserve flight operations and training.

The base was decommissioned as an Air Force installation in 1972 and the Community Improvement Corporation (CIC) began developing the area as the Wilmington Industrial Air Park (WIAP). It also became home to the Great Oaks Joint Vocation School. In 1977, the Southern State Community College opened, using old barracks buildings as classrooms. In 1980, Midwest Air Charter was acquired by Airborne Freight Corporation, resulting in Airborne Express, which became the largest tenant at WIAP.