Clearwater Airpark
21OI has 3 runways. The longest is 7/25 at 2,650 ft × 30 ft (turf).
FAA NASR data, cycle 2026-09-03
21OI field elevation is 905 ft MSL. The standard traffic pattern altitude at 21OI is 1,910 ft MSL (1,000 ft AGL).
FAA NASR data, cycle 2026-09-03
UNICOM 123.0 MHz — 21OI is non-towered; self-announce position and intentions on UNICOM.
Check 21OI against your personal minimums, plan a route to it, and see the best runway for the current wind — free.
No, 21OI is a non-towered airport.
21OI has 3 runways (7/25, 17/35, H1). The longest runway is 2,650 feet.
Runway 7/25 is the longest at 21OI — 2,650 ft × 30 ft, turf.
21OI uses the standard traffic pattern altitude of 1,000 feet AGL — about 1,910 feet MSL at a field elevation of 905 feet.
21OI (Clearwater Airpark) has a field elevation of 905 feet MSL.
21OI (Clearwater Airpark) is located in Batavia, OH.