Knox County Airport

Knox County Airport
Summary
Airport typePublic
OwnerKnox County Airport Authority
ServesMount Vernon, Ohio
Time zoneUTC−05:00 (-5)
 • Summer (DST)UTC−04:00 (-4)
Elevation AMSL1,192 ft (363 m)
Coordinates40°19′44″N 082°31′34″W / 40.32889°N 82.52611°W / 40.32889; -82.52611
Map
4I3 is located in Ohio
4I3
4I3
Location within Ohio
4I3 is located in the United States
4I3
4I3
Location within the United States
Runways
Direction Length Surface
ft m
10/28 5,504 1,678 Asphalt
Statistics (2023)
Aircraft operations (year ending 8/2/2023)24,150
Based aircraft75
Source: Federal Aviation Administration[1]

Knox County Airport (FAA LID: 4I3) is five miles southwest of Mount Vernon, in Knox County, Ohio.[1]

History

After evaluating 16 different locations, a 109-acre (44 ha) site for the Mt. Vernon Airpark was selected in early 1964.[2][3] By the time the airport was nearly finished, it was discovered that the state was offering grants for the construction or improvement of county airports. Therefore, when the airport opened on 1 March 1966 with a 3,200 ft (980 m) runway, there was already a proposal in place to extend the runway to 4,000 ft (1,200 m).[4][5] By late April 1971, construction of a 2,100 ft (640 m) taxiway was planned.[6]

The airport was temporarily closed on 15 March 1990 after the operators failed to pay rent.[7] It was reopened two days later with volunteer help.[8]

An airport safety zone proposed in 2001 was met with opposition from local residents.[9]

The terminal was renovated in 2020.[10] In 2023, the airport announced plans to add hangar space and a new building to house snow removal equipment.[11] The airport broke ground on an Aviation Center, which includes a 10,000-square-foot (930 m2) hangar, in late October 2024.[12][13] A Civil Air Patrol unit was started at the airport in August 2025.[14]

Facilities

Knox County Airport covers 386 acres (156 ha) at an elevation of 1,192 feet (363 m). Its one runway, 10/28, is 5,504 x 100 ft (1,678 x 30 m) asphalt.[1][15]

The airport has a fixed-base operator that sells fuel.[16]

In the year ending August 2, 2023, the airport had 24,150 aircraft operations, average 66 per day: 97% general aviation, 2% air taxi and <1% military. 75 aircraft were then based at the airport: 71 single-engine and 3 multi-engine airplanes and 1 jet.[1][15]

Accidents and incidents

  • On 1 December 1974, a Cessna 441 crashed at the airport, injuring the pilot and three passengers.[17]
  • On March 27, 2002, a Robinson R-22 helicopter was substantially damaged while landing at the Knox County Airport. The pilot was attempting to land at the airport after a solo flight. When the aircraft touched down, it bounced, and the pilot lost directional control. The helicopter touched down a second time, began to spin to the left, and the tailboom struck a ground observer in the head. The helicopter then rolled left and came to rest on its side. The pilot recalled that he had applied full power upon the first touchdown on the pavement, "and fell victim to torque and or tail rotor thrust." The probable cause of the accident was found to be the pilot's failure to maintain directional control while landing.[18][19]
  • On July 28, 2018, a Cessna 172 crashed during landing at the Knox County Airport. The pilot reported that there was smoke in the cockpit while he was trying to land, and the aircraft ignited during landing.[20][21]

See also

References

  1. 1 2 3 4 "FAA Airport Form 5010 for 4I3" (PDF). FAA. Retrieved November 30, 2023.
  2. ↑ "Airport Site is Selected". Coshocton Tribune. 1 April 1964. p. 19. Retrieved 8 June 2026.
  3. ↑ "Mt. Vernon, Ohio Plans Airport". Aero News. 9 July 1964. Retrieved 9 June 2026.
  4. ↑ Amos, Barbara (29 May 1966). "Mt. Vernon Airport Headed by Woman". News Journal. p. 4-A. Retrieved 11 March 2026.
  5. ↑ La Porte, Todd (December 1974). Interactions of Technology and Society: Impacts of Improved Airtransport, a Study of Airports at the Grass Roots (Report). Institute of Governmental Studies, University of California. pp. 178–179. Retrieved 20 June 2026.
  6. ↑ Simon, Ron (25 April 1971). "Mt. Vernon Airport Thrives After Five Years Service". News Journal. p. 2-B. Retrieved 11 March 2026.
  7. ↑ "Knox County Airport Closed; Officials Order Operators Out". News Journal. 16 March 1990. p. 4-A. Retrieved 11 March 2026.
  8. ↑ "Knox County Airport Reopened with Volunteers". News Journal. 19 March 1990. p. 5-A. Retrieved 11 March 2026.
  9. ↑ "Knox County Airport Plan Upsets Neighbors". News Journal. AP. 14 May 2001. p. 8A. Retrieved 11 March 2026.
  10. ↑ Di Giovanni, Larry (16 June 2020). "Airport Terminal Projects Completed". Mount Vernon News. Retrieved 20 June 2026.
  11. ↑ Pepalis, Bob (10 August 2023). "Knox County Airport Plan Upsets Neighbors". Mount Vernon News. Retrieved 20 June 2026.
  12. ↑ "Knox County Regional Airport to Celebrate Groundbreaking of New Aviation Center". Mount Vernon News. 14 October 2024. Retrieved 2 December 2025.
  13. ↑ "Knox County Airport Breaks Ground on New Aviation Educational Facility". Knox Pages. 26 October 2024. Retrieved 11 March 2026.
  14. ↑ Slemenda, Jack (29 November 2025). "New Civil Air Patrol Unit Takes Flight at Mount Vernon Airport". Knox Pages. Retrieved 11 March 2026.
  15. 1 2 "AirNav: 4I3 - Knox County Airport". www.airnav.com. Retrieved 2024-01-29.
  16. ↑ "Knox County Airport FBO Info & Fuel Prices at Knox County (4I3)". FlightAware. Retrieved 2024-01-29.
  17. ↑ "Cincinnati Area Flight Teacher Hurt in Air Crash". Cincinnati Post. 3 December 1974. p. 8. Retrieved 11 March 2026.
  18. ↑ "Robinson R-22 crash in Ohio (N961CL) | PlaneCrashMap.com". planecrashmap.com. Retrieved 2024-01-29.
  19. ↑ "Accident Robinson R-22 N961CL,". Aviation Safety Network. Flight Safety Foundation. Retrieved 2024-01-29.
  20. ↑ "OSP: No injuries reported after single-engine plane crash at Knox Co. Airport". NBC4 WCMH-TV. 2018-07-28. Retrieved 2024-01-29.
  21. ↑ "Pilot walks away after single-plane crash in Knox County". 10tv.com. 2018-07-28. Retrieved 2024-01-29.
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