FAA INFORMATION EFFECTIVE 19 MARCH 2026
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 -4 (UTC -5 during Standard 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: | 123.05 |
| WX AWOS-3: | 119.275 (937-644-2967) |
| COLUMBUS APPROACH: | 125.95 |
| COLUMBUS DEPARTURE: | 125.95 |
| IC: | 125.95 |
| WX AWOS-3PT 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 19 March 2026 at 0901Z to 16 April 2026 at 0900Z.
IAPs - Instrument Approach Procedures |
| RNAV (GPS) RWY 09 | |
download (229KB) |
| RNAV (GPS) RWY 27 | |
download (214KB) |
| 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:
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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 06-Apr-2026
| | Local (UTC-4) | | Zulu (UTC) |
| Morning civil twilight | | 06:43 | | 10:43 |
| Sunrise | | 07:10 | | 11:10 |
| Sunset | | 20:02 | | 00:02 |
| Evening civil twilight | | 20:29 | | 00:29 |
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| Current date and time |
| Zulu (UTC) | 06-Apr-2026 10:55:48 |
| Local (UTC-4) | 06-Apr-2026 06:55:48 |
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| METAR |
| KMRT | 061035Z AUTO 21008KT 10SM BKN075 BKN090 BKN110 02/00 A3013 RMK AO2 PRESFR
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KDLZ 11nm E | 061035Z AUTO 21005KT 10SM FEW045 BKN075 OVC090 03/02 A3013 RMK AO2
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KOSU 15nm SE | 060953Z AUTO 22006KT 10SM BKN100 02/M01 A3016 RMK AO2 SLP219 T00221011
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KUYF 18nm S | 061035Z AUTO 22006KT 10SM BKN090 01/00 A3016 RMK AO2
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KI74 19nm W | 061035Z AUTO 00000KT 10SM BKN090 02/00 A3015 RMK AO2
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| TAF |
KCMH 25nm SE | 060524Z 0606/0706 27005KT P6SM SKC FM061300 25009KT P6SM FEW050 FM061500 32014G25KT P6SM BKN035 FM070300 31010KT P6SM SCT250
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KLCK 32nm SE | 060524Z 0606/0706 27005KT P6SM SKC FM061300 25009KT P6SM FEW050 FM061500 32014G25KT P6SM BKN035 FM070300 31010KT P6SM SCT250
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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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