Grindstone Air Harbor (29C)
Non-towered public-use airport serving Port Austin, Michigan, at 640 ft elevation.
Elevation640 ft
ControlNon-towered
Longest runway1,800 ft
Magnetic variation7° W
Live weather
Forecast (TAF)
Loading…
Frequencies
| CTAF | 122.9 |
|---|
Runways
| Runway | Size | Surface | Lights |
|---|---|---|---|
| 18/36 | 1,800 × 85 ft | Turf |
No fuel listed. Sectional: Lake Huron.
Nearby airports
E53Engler Field13 NM SWKBAXHuron County Memorial16 NM S6D9Iosco County27 NM NW98GSebewaing Township30 NM SWKOSCOscoda/Wurtsmith32 NM NWY83Sandusky City36 NM S
Before you fly here
- Read the FAA Chart Supplement entry for 29C: traffic pattern, CTAF/UNICOM, hours, fuel and remarks.
- Check NOTAMs and get a weather briefing at 1800wxbrief.com.
- Study the airport diagram and the sectional around 29C for airspace and terrain.
- More detail: AirNav · SkyVector
Airport data from the FAA National Airspace System Resource (NASR) subscription effective Oct 1, 2026; magnetic variation as published for 1995. Weather is live from aviationweather.gov. Always confirm with current official sources before flight. This guide is a study aid.