Reference data only — not for flight planning or navigation. Verify with official sources (AIP, NOTAMs, ATC). Full disclaimer
Knox County Airport (K4I3) — Mount Vernon, United States
At a glance
- Operating hours
- 07:00–17:00 UTC
- Runways
- 10/28
- Elevation
- 1,191 ft
Times in UTC. Reference only: verify with the AIP and NOTAMs.
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71%
Data Complete
37 of 52 points
Missing: Fuel, Contacts
Section Breakdown
Basic Info
7/7
Runways
4/4
Frequencies
2/4
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 Recently verified Outdated — please verify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: K4I3
- Name: Knox County Airport
- Type: small_airport
- Category: Domestic
- Latitude: 40.328701
- Longitude: -82.523804
- Elevation: 1191 ft
- Country: United States
- Municipality: Mount Vernon
- IATA Code: N/A
- FAA Code: N/A
- FIR: N/A
- Timezone: America/New_York
- Distance from City: N/A km
- VFR: Yes
- IFR: No
Runways
Runway 10/28
- Designation: 10/28
- Dimensions: 1678x30m
- 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: 116.700 MHz
- Traffic/Approach: N/A
- ATIS: 118.425 MHz
Operation Hours
Monday
07:00
–
17:00
Tuesday
07:00
–
17:00
Wednesday
07:00
–
17:00
Thursday
07:00
–
17:00
Friday
07:00
–
17:00
Saturday
09:00
–
17:00
Sunday
09:00
–
17:00
- Extra Hours On Request: Not recorded
- Remarks: Mon 07:00-17:00; Tue 07:00-17:00; Wed 07:00-17:00; Thu 07:00-17:00; Fri 07:00-17:00; Sat 09:00-17:00; Sun 09:00-17:00
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
10/005
info Upcoming
COM CLR DELIVERY 119.45 U/S
2026-10-28 04:01 UTC
2026-10-28 10:00 UTC
10/004
info
OBST TOWER LGT (ASR 1326675) 401747.00N0823434.50W (3NM SW 4I3) 1391FT (254FT AGL) U/S
2026-10-27 03:57 UTC
2026-12-11 09:57 UTC
10/001
info
OBST TOWER LGT (ASR 1014459) 401445.60N0822853.10W (5.4NM SSE 4I3) 1505.9FT (411.1FT AGL) U/S
2026-10-01 15:12 UTC
2027-01-29 15:12 UTC
+2 more active NOTAMs
NOTAMs received from the FAA NOTAM feed (last message 2026-10-27 23:15 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 Knox 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 K4I3?
- Knox County Airport operates from 07:00 to 17:00.
- Does K4I3 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 K4I3 located?
- Knox County Airport (K4I3) is located in Mount Vernon, United States.
- How long is the runway at K4I3?
- The main runway at Knox County Airport (10/28) measures 1678x30m.