Muhlenberg County Airport
M21 has 1 runway. The longest is 5/23 at 5,000 ft × 75 ft (asphalt).
FAA NASR data, cycle 2026-09-03
M21 field elevation is 422 ft MSL. The standard traffic pattern altitude at M21 is 1,420 ft MSL (1,000 ft AGL). Fuel available at M21: 100LL, Jet A+.
FAA NASR data, cycle 2026-09-03
CTAF 123.0 MHz — M21 is non-towered; self-announce position and intentions on CTAF.
Check KM21 against your personal minimums, plan a route to it, and see the best runway for the current wind — free.
No, M21 is a non-towered airport. The CTAF frequency is 123.0 MHz.
The AWOS frequency at M21 (Muhlenberg County Airport) is 120.375 MHz.
M21 has 1 runway (5/23). The longest runway is 5,000 feet.
M21 uses the standard traffic pattern altitude of 1,000 feet AGL — about 1,420 feet MSL at a field elevation of 422 feet.
Yes. M21 (Muhlenberg County Airport) has 100LL, Jet A+ available. Call the field for hours, self-serve availability and price.
M21 (Muhlenberg County Airport) has a field elevation of 422 feet MSL.
M21 (Muhlenberg County Airport) is located in Greenville, KY.