FAA INFORMATION EFFECTIVE 30 OCTOBER 2025
Location
| FAA Identifier:  | MRT |  
| Lat/Long:  | 40-13-28.1120N 083-21-06.2940W 40-13.468533N 083-21.104900W 40.2244756,-83.3517483 (estimated) |  
| Elevation:  | 1020.7 ft. / 311.1 m (surveyed) |  
| Variation:  | 05W (1985) |  
| From city:  | 1 mile SE of MARYSVILLE, OH |  
| Time zone:  | UTC -5 (UTC -4 during Daylight Saving Time) |  
| Zip code:  | 43040 |  
 
Airport Operations
| Airport use:  | Open to the public |  
| Activation date:  | 07/1967 |  
| Control tower:  | no |  
| ARTCC:  | INDIANAPOLIS CENTER |  
| FSS:  | DAYTON FLIGHT SERVICE STATION |  
| NOTAMs facility:  | MRT (NOTAM-D service available) |  
| Attendance:  | 0800-1700 |  
| Wind indicator:  | lighted |  
| Segmented circle:  | no |  
| Lights:  | ACTVT REIL RWY 09 & 27; PAPI RWY 09 & 27; MIRL RWY 09/27 - CTAF. |  
| Beacon:  | white-green (lighted land airport) Operates sunset to sunrise. |  
| Landing fee:  | no, RAMP FEE FOR COML ACFT. |  
 
Airport Communications
| CTAF/UNICOM:  | 122.8 |  
| WX AWOS-3:  | 119.275 (937-644-2967) |  
| COLUMBUS APPROACH:  | 125.95 |  
| COLUMBUS DEPARTURE:  | 125.95 |  
| IC:  | 125.95 |  
| WX AWOS-3 at DLZ (11 nm E):  | 119.025 (740-203-1878) |  
| WX ASOS at OSU (15 nm SE):  | 121.35 (614-451-2465) |  
| WX AWOS-3PT at UYF (18 nm S):  | 120.85 (740-852-2844) |  
| WX AWOS-3 at I74 (19 nm W):  | 118.325 (937-484-5863) |  
 
Nearby radio navigation aids
| VOR radial/distance |    | VOR name |    | Freq |    | Var |  
| BUDr214/(27.0) |  | BUCKEYE VOR |  | 109.80 |  | 05W |  
| RODr102/31.9 |  | ROSEWOOD VORTAC |  | 117.50 |  | 05W |  
| APEr283/35.3 |  | APPLETON VORTAC |  | 116.70 |  | 06W |  
 
  
 
| NDB name |    | Hdg/Dist |    | Freq |    | Var |    | ID |  
| FULER |  | 327/11.5 |  | 515 |  | 05W |  | OS |  --- ... |  
| COURT HOUSE |  | 009/37.5 |  | 414 |  | 06W |  | CSS |  -.-. ... ... |  
 
Airport Services
| Fuel available:  | 100LL JET-A1 JET-A1+ 100LL:FUEL AVBL H24 SELF SVC VIA CREDIT CARD. |  
| Parking:  | hangars and tiedowns |  
| Airframe service:  | MAJOR |  
| Powerplant service:  | MAJOR |  
| Bottled oxygen:  | NONE |  
| Bulk oxygen:  | NONE |  
 
Runway Information
Runway 9/27
| Dimensions:  | 4218 x 75 ft. / 1286 x 23 m |  
| Surface:  | asphalt, in fair condition |  
| Weight bearing capacity:  |  |  
| Runway edge lights:  | medium intensity |  
 | RUNWAY 9 |    | RUNWAY 27 |  
| Latitude:  | 40-13.438457N |  | 40-13.523258N |  
| Longitude:  | 083-21.546040W |  | 083-20.646537W |  
| Elevation:  | 1020.6 ft. |  | 996.8 ft. |  
| Traffic pattern:  | left |  | left CK NOTAMS FOR STS OF AEROBATIC BOX SOUTH OF RWY 09/27 & 08/26 - RP RWY 27 & 26 WHEN ACTV. |  
| Runway heading:  | 088 magnetic, 083 true |  | 268 magnetic, 263 true |  
| Displaced threshold:  | no |  | 123 ft. |  
| Markings:  | nonprecision, in good condition |  | nonprecision, in good condition |  
| Visual slope indicator:  | 4-light PAPI on left (3.00 degrees glide path) |  | 4-light PAPI on left (3.00 degrees glide path) |  
| Runway end identifier lights:  | yes |  | yes |  
| Touchdown point:  | yes, no lights |  | yes, no lights |  
| Obstructions:  | none |  | 20 ft. rr, 425 ft. from runway, 260 ft. right of centerline, 11:1 slope to clear APCH RATIO 27:1 TO DTHR DUE TO +20 FT RR, 425 FT DIST, 260 FT R. |  
 
Runway 8/26
| Dimensions:  | 2522 x 80 ft. / 769 x 24 m |  
| Surface:  | turf, in good condition |  
| Runway edge markings:  | THR & EDGES MKD WITH CONES. |  
 | RUNWAY 8 |    | RUNWAY 26 |  
| Latitude:  | 40-13.422530N |  | 40-13.473238N |  
| Longitude:  | 083-21.388198W |  | 083-20.850388W |  
| Elevation:  | 1015.3 ft. |  | 995.6 ft. |  
| Traffic pattern:  | left |  | left |  
| Runway heading:  | 088 magnetic, 083 true |  | 268 magnetic, 263 true |  
| Runway end identifier lights:  | no |  | no |  
| Touchdown point:  | yes, no lights |  | yes, no lights |  
 
Airport Ownership and Management from official FAA records
| Ownership:  | Publicly-owned |  
| Owner:  | UNION COUNTY ARPT AUTH COUNTY COURTHOUSE, 215 W 5TH ST MARYSVILLE, OH 43040 Phone 937-644-2055 |  
| Manager:  | DAVID HOLDEN 760 CLYMER RD MARYSVILLE, OH 43040-9502 Phone 937-644-2055 AFT HRS & EMERG 937-741-3120. |  
 
Additional Remarks
 | A30A-09  | CALM WIND RWY. |  
 | -  | DEER, BIRDS, & OTR WILDLIFE ON & INVOF ARPT. |  
 | -  | FOR CD CTC COLUMBUS APCH AT 614-338-8537. |  
 
 
    Instrument Procedures
NOTE: All procedures below are presented as PDF files. If you need a reader for these files, you should download the free Adobe Reader.NOT FOR NAVIGATION. Please procure official charts for flight. FAA instrument procedures published for use from 30 October 2025 at 0901Z to 27 November 2025 at 0900Z. 
  IAPs - Instrument Approach Procedures |  
| RNAV (GPS) RWY 09 |    | 
download (232KB) |  
| RNAV (GPS) RWY 27 |    | 
download (217KB) |  
| NOTE: Special Alternate Minimums apply |    | 
download (53KB) |  
| NOTE: Special Take-Off Minimums/Departure Procedures apply |    | 
download (478KB) |  
 
Other nearby airports with instrument procedures: 
KDLZ - Delaware Municipal Airport - Jim Moore Field (11 nm E) 
KOSU - Ohio State University Airport (15 nm SE) 
KUYF - Madison County Airport (18 nm S) 
I74 - Grimes Field Airport (19 nm W) 
KTZR - Bolton Field Airport (22 nm SE) 
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Road maps at:
MapQuest
Bing
Google
   
   
| Aerial photo |  
WARNING: Photo may not be current or correct 
 
Taken  late December 2006
 
Do you have a better or more recent aerial photo of Union County Airport that you would like to share?  If so, please send us your photo. 
   
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| Sectional chart |  
 
   
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| Airport distance calculator |  
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| Sunrise and sunset |  
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 Times for 04-Nov-2025 
 |   | Local (UTC-5) |   | Zulu (UTC) |  
| Morning civil twilight |  | 06:39 |  | 11:39 |  
| Sunrise |  | 07:07 |  | 12:07 |  
| Sunset |  | 17:27 |  | 22:27 |  
| Evening civil twilight |  | 17:55 |  | 22:55 |  
 
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| Current date and time |  
| Zulu (UTC)   | 04-Nov-2025 06:02:51 |  
| Local (UTC-5)   | 04-Nov-2025 01:02:51 |  
 
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| METAR |  
| KMRT  | 040550Z 26004KT 10SM CLR 02/M02 A3024 RMK AO2
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KDLZ  11nm E  | 040555Z AUTO VRB01KT 10SM CLR 03/M01 A3023 RMK AO2 10099 20023
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KOSU  15nm SE  | 040553Z AUTO 24004KT 10SM CLR 04/M01 A3024 RMK AO2 SLP244 T00441006 10094 20028 51003
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KUYF  18nm S  | 040555Z AUTO 26008KT 10SM CLR 02/00 A3026 RMK AO2
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KI74  19nm W  | 040555Z AUTO 00000KT 10SM CLR 00/00 A3026 RMK AO2
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| TAF |  
KCMH  25nm SE  | 040538Z 0406/0506 24003KT P6SM SKC FM041700 24008KT P6SM BKN200 FM042300 17005KT P6SM SKC 
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KLCK  32nm SE  | 040538Z 0406/0506 VRB03KT P6SM SKC FM041700 24008KT P6SM BKN200 FM042300 17005KT P6SM SKC 
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| NOTAMs |  
NOTAMs are issued by the DoD/FAA and will open in a separate window not controlled by AirNav.
  
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