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GRAND LAKE ST MARYS - Airport Diagram
LiveATC.net: Live Air Traffic - From Their Headsets to You

O12
Local O12
GRAND LAKE ST MARYS
PublicPUB

5 miles NE of ST MARYS, OH, US
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LiveATC.net: Live Air Traffic - From Their Headsets to You
Status
Operational
Coordinates
40° 32' 28"N 84° 29' 26"W
Elevation
871' MSL
Pattern Alt
1871' MSL
Mag Variation
6°W
Fuel
100LL
FSS
DAYTON (DAY)
Sectional
DETROIT
ARTCC
INDIANAPOLIS (ZID)
Data Effective
4/16/26-5/14/26
KAXV (9nm) VFR
8:35 PM EDT  
Light Rain
Overcast 9,000'
Scattered 7,500'
Scattered 6,500'
10sm
63°F
61°F
29.76"Hg
320° 4kts
AO2 P0005
METAR KAXV 250035Z AUTO 32004KT 10SM -RA SCT065 SCT075 OVC090 17/16 A2976 RMK AO2 P0005
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Common

CTAF 122.9
ACFT OPRG AT GRAND LAKE ST MARYS SHOULD MNT TFC ON LAKEFIELD CTAF & NEIL ARMSTRONG CTAF.

FAA A/FD Pages

Terminal Area Forecast

KDAY (40nm)
Fri, 4/24 7:34 PM EDT
Fri, 4/24 8:00 PM EDT - Sat, 4/25 8:00 PM EDT
MVFR
8:00 PM EDT - 10:00 PM EDT
Light Showers and Rain
Broken 6,000'
5sm
240° 14kts
Gusts 20kts
VFR
10:00 PM EDT - 2:00 AM EDT
Overcast 15,000'
Broken 3,500'
6sm
250° 8kts
MVFR
10:00 PM EDT - 2:00 AM EDT
Light Showers and Rain
No Clouds
5sm
Calm
MVFR
2:00 AM EDT - 7:00 AM EDT
Broken 2,500'
6sm
310° 5kts
MVFR
7:00 AM EDT - 12:00 PM EDT
Overcast 3,000'
Broken 1,500'
6sm
340° 9kts
VFR
12:00 PM EDT - 4:00 PM EDT
Broken 3,500'
Scattered 2,500'
6sm
360° 7kts
VFR
4:00 PM EDT - 8:00 PM EDT
Broken 25,000'
Scattered 2,500'
6sm
010° 12kts
TAF KDAY 242334Z 2500/2524 24014G20KT 5SM -SHRA BKN060
   FM250200 25008KT P6SM BKN035 OVC150
   PROB30 2502/2506 5SM -SHRA
   FM250600 31005KT P6SM BKN025
   FM251100 34009KT P6SM BKN015 OVC030
   FM251600 36007KT P6SM SCT025 BKN035
   FM252000 01012KT P6SM SCT025 BKN250
O12
EffectiveExpiresCategoryNOTAM
Domestic
4/23/26
1150Z
8/20/26
2359Z
!DAY 04/197 O12 OBST TOWER LGT (ASR 1217931) 404412.80N0842017.00W (13.7NM NNE O12) 1128.0FT (310.0FT AGL) U/S 2604231150-2608202359
No
APR-NOV 0800-1700
ARPT CLSD NOV 15 TO APR 1 & MEMORIAL & LABOR DAY.
OHIO DIV OF PARKS & REC
834 EDGEWATER DR
SAINT MARYS, OH 45885
Phone: 419-394-3611
DAVID FALER, ASST PARK MGR
GRAND LAKE SAINT MARYS STATE PARK 834 EDGEWATER DR
SAINT MARYS, OH 45885
Phone: 419-394-3611
DAYTON FSS (DAY)
Toll Free: 1-800-WX-BRIEF
DAY
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N/A
N/A
No
No
None
No
None
None
None
None
None

Runway 09W/27W

7000 ft. x 4000 ft.
 
WATER 
NONE 
 
 
-- 
-- 
-- 
-- 
  Runway 09W Runway 27W
True Heading Not ListedNot Listed
Traffic Pattern Right
Markings BUOY BUOY
Markings Condition GOOD GOOD
Latitude N/A N/A
Longitude N/A N/A
Elevation -- --
Threshold Crossing Height -- --
Visual Glide Path Angle -- --
Visual Slope Indicator -- --
Approach Lights
Centerline Lights
Runway End Identifier Lights
A110-1NO NGT OPS.
A110-2NO PUB DOCKS; PPR FOR PVT DOCK TIE UP; CALL KOZY MARINA 419-394-8797.
A110-3FOR CD CTC COLUMBUS APCH AT 614-338-8537.
A16CELL 419-656-7060.
A17-M1ARPT CLSD NOV 15 TO APR 1 & MEMORIAL & LABOR DAY.
A70-100LL100LL AVBL ON REQ, PPR, CTC KOZY MARINA 419-394-8797.
A82ACFT OPRG AT GRAND LAKE ST MARYS SHOULD MNT TFC ON LAKEFIELD CTAF & NEIL ARMSTRONG CTAF.
E111PRVDD 20:1 APCH; OIL WELL TO THE S MKD & LGTD; SEA LANES MKD & LGTD PER AC 150/5395-1.
GRAND LAKE ST MARYS (IATA: O12) is a public seaplane base located in ST MARYS, OH, US.