Fort Sill Approach FSI
Fort Sill Approach (FSI) is the approach and departure control facility that public NASR records list as the primary approach control for 3 airports, 1 of them with a control tower. Pilots call it "Fort Sill Approach".
Airports it serves (3)
| Airport | City | Tower |
|---|---|---|
| Lawton Fort Sill Regional Airport (KLAW) | Lawton, OK | Tower (page) |
| Halliburton Field (KDUC) | Duncan, OK | No tower |
| Henry Post Army Air Field (KFSI) | Fort Sill, OK | No tower |
Source
FAA National Airspace System Resource (NASR) data, 28-day cycle effective 2026-10-01 (FAA NASR subscription). Facility data changes every 28 days; check current FAA publications before flight.
Public records, summarized in plain language. Not for navigation or operational use. Privacy: no cookies, no tracking.