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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
5/14/26-6/11/26
KAXV (9nm) VFR
11:15 PM EDT  
Clear
10sm
46°F
41°F
30.04"Hg
Calm
AO2
METAR KAXV 150315Z AUTO 00000KT 10SM CLR 08/05 A3004 RMK AO2
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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)
Thu, 5/14 7:27 PM EDT
Thu, 5/14 8:00 PM EDT - Fri, 5/15 8:00 PM EDT
VFR
8:00 PM EDT - 12:00 AM EDT
Scattered 5,000'
6sm
300° 5kts
VFR
12:00 AM EDT - 10:00 AM EDT
Few 15,000'
6sm
VRB° 3kts
VFR
10:00 AM EDT - 5:00 PM EDT
Broken 15,000'
Scattered 12,000'
6sm
180° 9kts
VFR
5:00 PM EDT - 8:00 PM EDT
Broken 8,000'
6sm
190° 9kts
TAF KDAY 142327Z 1500/1524 30005KT P6SM SCT050
   FM150400 VRB03KT P6SM FEW150
   FM151400 18009KT P6SM SCT120 BKN150
   FM152100 19009KT P6SM BKN080
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
--
--
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.