Reference data only — not for flight planning or navigation. Verify with official sources (AIP, NOTAMs, ATC). Full disclaimer
Muhlenberg County Airport (KM21) — Greenville, United States
At a glance
- Operating hours
- 08:00–17:00 UTC
- Runways
- 05/23
- Elevation
- 422 ft
Times in UTC. Reference only: verify with the AIP and NOTAMs.
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69%
Data Complete
36 of 52 points
Missing: Fuel, Contacts
Section Breakdown
Basic Info
7/7
Runways
4/4
Frequencies
1/4
Operations
2/2
Fuel
0/1
Contacts
0/2
Additional Info
2/10
Data last updated:
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See a next to a field? Click it to confirm the info is still correct. Recently verified Outdated — please verify
Basic Airport Information
- ICAO: KM21
- Name: Muhlenberg County Airport
- Type: small_airport
- Category: Domestic
- Latitude: 37.2262
- Longitude: -87.156403
- Elevation: 422 ft
- Country: United States
- Municipality: Greenville
- IATA Code: N/A
- FAA Code: N/A
- FIR: N/A
- Timezone: America/Chicago
- Distance from City: N/A km
- VFR: Yes
- IFR: No
Runways
Runway 05/23
- Designation: 05/23
- Dimensions: 1524x23m
- Surface: ASP
- PCN: N/A
- Lighting: Lighted
- NAVAIDs: N/A
- Approach Types: N/A
- Remarks: N/A
Frequencies
- Tower: N/A
- Ground: N/A
- Operations: N/A
- Traffic/Approach: N/A
- ATIS: 120.375 MHz
Operation Hours
Monday
08:00
–
17:00
Tuesday
08:00
–
17:00
Wednesday
08:00
–
17:00
Thursday
08:00
–
17:00
Friday
08:00
–
17:00
Saturday
08:00
–
17:00
Sunday
08:00
–
17:00
- Extra Hours On Request: Not recorded
- Remarks: N/A
Contacts
- AIS Tel: N/A
- ARO Tel: N/A
- MET Tel: N/A
- Admin Tel: N/A
- Health Tel: N/A
- Police Tel: N/A
- Authorities Tel: N/A
- Website: N/A
- Remarks: N/A
Slots / PPR
- Slot Required: Not recorded
- PPR Required: Not recorded
- PPR Contact: N/A
- Remarks: N/A
Immigration
- Port of Entry: Not recorded
- APIS Required: Not recorded
- GAR Required: Not recorded
- Remarks: N/A
Airport Services
No services listed for this airport yet.
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United States Permit Requirements
Fast
Landing: 1d
- Overflight Permit: No
- Landing Permit: Conditional
- Overflight Lead Time: N/A
- Landing Lead Time: 60 minutes minimum (eAPIS manifest before departure); recommend 24-48 hours for CBP port notification
Private / GA Operations:
No permits required for private non-revenue flights. eAPIS manifest mandatory for all international arrivals/departures.
Active NOTAMs
10/436
info
OBST TOWER LGT (ASR 1324235) 365926.00N0870944.10W (14.1NM S M21) 1053FT (255FT AGL) U/S
2026-10-26 14:15 UTC
2026-12-10 20:15 UTC
10/391
info
RWY 24 RWY END ID LGT U/S
2026-10-23 11:47 UTC
2027-04-23 21:11 UTC
10/328
info
OBST TOWER LGT (ASR 1293664) 371542.50N0871203.10W (3.0NM NW M21) 750.3FT (199.1FT AGL) U/S
2026-10-19 06:04 UTC
2027-02-16 06:04 UTC
+7 more active NOTAMs
NOTAMs received from the FAA NOTAM feed (last message 2026-10-28 09:00 UTC). This list is built from the feed as NOTAMs are issued and is not checked against the FAA's full list: confirm with FAA NOTAM Search before flight.
View all NOTAMs on Map
Nearby Airports
Airport History
No milestones recorded for Muhlenberg County Airport yet. Know when it opened, who built it or a notable event? Add it with a source.
Add a historical factFrequently Asked Questions
- What are the operating hours of KM21?
- Muhlenberg County Airport operates from 08:00 to 17:00.
- Does KM21 require landing permits?
- It depends on the flight. No permits required for private non-revenue flights. eAPIS manifest mandatory for all international arrivals/departures. Permit details for United States
- Where is KM21 located?
- Muhlenberg County Airport (KM21) is located in Greenville, United States.
- How long is the runway at KM21?
- The main runway at Muhlenberg County Airport (05/23) measures 1524x23m.