Grand Lake St. Marys Seaplane Base
O12 · St Marys, Ohio · Auglaize County · map
Grand Lake St. Marys Seaplane Base is a public-use seaplane base, 5 miles west of St Marys, Ohio, 871 feet above sea level. It has 1 water landing area. It has fuel (100LL avgas).
Quick answers answers refresh every morning
What is the airport code for Grand Lake St. Marys Seaplane Base?
Its FAA code is O12.
Where is Grand Lake St. Marys Seaplane Base?
It is 5 miles west of St Marys, Ohio, 871 feet above sea level.
Does Grand Lake St. Marys Seaplane Base have a control tower?
No, it has no control tower.
What fuel can you buy at Grand Lake St. Marys Seaplane Base?
The FAA's airport file lists 100LL avgas.
Where are the nearest FAA examiners to Grand Lake St. Marys Seaplane Base?
5 pilot examiners and 9 aviation medical examiners work within 50 nautical miles. See them by name
Weather and planning now, the forecast, warnings, pilot reports, winds aloft, restrictions
Fetching the weather now, the forecast, the warnings in force, pilot reports and the winds aloft for Grand Lake St. Marys Seaplane Base…
Wind map live wind over the area, from Windy.com
Colours show wind speed, the moving lines its direction; drag the time bar for the coming days. Map and forecast by Windy.com.
The seaplane base facts, runways, radio, fuel and services, the FAA's remarks
The airport
- Codes
- FAA O12
- Kind
- Seaplane base · open to the public · publicly owned
- Elevation
- 871 feet above sea level
- Control tower
- No control tower
- Attended
- April to November, every day, 8:00 am to 5:00 pm
- Fuel and services
- 100LL avgas; the services card below
- On the chart
- Detroit sectional
- In the FAA's files since
- April 1995
Runway
For understanding the field, not for navigation.
| Runway | Length × width | Surface | Lights |
|---|---|---|---|
| 09W/27W | 7,000 × 4,000 ft | Water |
- Runway 27W: right-hand traffic pattern
Radio frequencies
| Common traffic advisory (CTAF) | 122.9 |
Fuel and services as reported to the FAA
- Fuel
- 100LL avgas
Nearest fields reporting jet fuel: Lakefield Airport (5 nm southwest), Neil Armstrong Airport (9 nm east), Darke County (20 nm south), Van Wert County (20 nm north).
The FAA's file records what is sold and done at the field, as the airport manager reports it, not who sells it or the price; fuel sellers (FBOs) are not named in any public file. Airports selling jet fuel in Ohio · avgas.
The FAA's remarks as written in the airport file, spelled out
- Provided 20:1 approach; oil well to the south marked and lighted; sea lanes marked and lighted per AC 150/5395-1.
- No night operations.
- Aircraft operating at Grand Lake state Marys should mnt traffic on lakefield the common traffic frequency and neil armstrong the common traffic frequency.
- Airport closed nov 15 to apr 1 and memorial and labor day.
Who flies and works here aircraft registered in town, the companies, the examiners nearby
Aircraft registered in St Marys from the FAA register
No aircraft on the register list St Marys, OH as the owner's town.
Examiners and inspectors nearby designated by the FAA · within 50 nautical miles
5 pilot examiners (the FAA's designated pilot examiners, who give the practical tests for pilot certificates) are based within 50 nautical miles: 5 for private pilot, 5 for commercial and instrument, 3 for airline transport pilot, 5 for flight instructor; 5 for airplanes, 5 for multi-engine airplanes. Also nearby: 9 aviation medical examiners, 2 mechanic examiners, 1 aircraft dispatcher examiner, 1 aircrew program designee, 1 training center examiner.
- Charles Noel Black private pilot, commercial and instrument, airline transport pilot, flight instructor, instrument instructor; airplanes, multi-engine airplanes · Auglaize County Neil Armstrong Airport · New Knoxville, OH (9 nm) · (419) 953-2220 · [email protected]
- Steven Wolf private pilot, commercial and instrument, flight instructor, instrument instructor; airplanes, multi-engine airplanes · DeGraff, OH (30 nm) · (937) 935-5557 · [email protected]
- Steven Lee Buchenroth private pilot, commercial and instrument, airline transport pilot, flight instructor, instrument instructor; airplanes, multi-engine airplanes · Bellefontaine Regional Airport · Bellefontaine, OH (32 nm) · (937) 597-2055 · [email protected]
- John Denny Green private pilot, commercial and instrument, airline transport pilot, flight instructor, instrument instructor, instructor renewals, ground instructor; airplanes, multi-engine airplanes · Muncie Aviation · Muncie, IN (45 nm) · (765) 744-2844 · [email protected]
- David George Ehrman private pilot, commercial and instrument, flight instructor; airplanes, multi-engine airplanes · Smith Field Aero Center · Ft Wayne, IN (47 nm) · (260) 602-5788 · [email protected]
All 19 nearby, by kind, with contact details
What each kind does
- DPE: Designated Pilot Examiner: gives the practical tests (checkrides) for pilot certificates and ratings.
- AME: Aviation Medical Examiner: a doctor who issues the medical certificates pilots must hold.
- DME: Designated Mechanic Examiner: tests candidates for the mechanic certificate (airframe and powerplant).
- DADE: Designated Aircraft Dispatcher Examiner: tests candidates for the dispatcher certificate.
- APD: Aircrew Program Designee: an airline's own check pilot who gives the FAA's tests to the airline's pilots.
- DCTO-E: Designee at a certificated training organisation.
Designees are listed with the name and contact details the FAA publishes for them on its designee locator (read October 10, 2026): the FAA lists them so that pilots, mechanics and companies can find them. Private individuals are not named, the site's policy at this time. A designee who would rather not appear here can ask us through the contact address on the About page. Each designee is placed at the main public airport of the town the FAA lists (or the nearest one to its zip code), so "nearby" means the town, not an exact address. All examiners by state.
Safety record the NTSB's cases at or near this seaplane base
Accidents and incidents at or near this seaplane base NTSB records · 1 since 1982, 0 fatal
Cases the NTSB recorded with this as the nearest airport, newest first. Each opens the full report in plain English. The country as a whole: Where accidents happen.
Nearby within 30 nautical miles
Connections how this seaplane base links to the rest of the register
- NTSB accidents and incidents at or near this seaplane base 1 since 1982 · 0 fatal
- Accidents and incidents in Ohio 1,877 since 1982 · 246 in the last ten years
- Nearby landing places within 30 nautical miles 8 airports, heliports and seaplane bases
- Public-use airports in Ohio 149 landing places
- Ohio 8,528 aircraft registered
The whole map of how records connect · these connections as data: /graph/airport/O12.json.
Facts from the FAA's airport file effective October 29, 2026, written out in plain English; weather from the National Weather Service's aviation weather service; registered aircraft from the FAA register as of October 28, 2026; accidents from the NTSB's public database. Owners are shown only when they are an organisation; no person is named. Check the official sources before a flight: this page is for understanding an airport, not for planning one.