29C Grindstone Air Harbor Airport
Port Austin, MI · 4 miles E of PORT AUSTIN, MI
Public
Non-towered
Privately-owned
Location & operations
- Elevation
- 640.0 ft
- Coordinates
- 44-02-48.4000N 082-54-51.9000W
- Lat / Long
- 44.0467778, -82.9144167
- Mag. variation
- 07W (1995)
- Time zone
- UTC -4 (UTC -5 during Standard Time)
- Activated
- 11/1996
- ARTCC
- MINNEAPOLIS CENTER
- FSS
- LANSING FLIGHT SERVICE STATION
- NOTAMs facility
- LAN (NOTAM-D service available)
- Attendance
- UNATNDD
- Wind indicator
- yes
- Segmented circle
- no
Airport location no published diagram
Range from 29C
Runways
Longest 1800 ft
Tap a runway to see its details.
- Dimensions
- 1800 x 85 ft. / 549 x 26 m
- Surface
- turf, in fair condition Runway edge markings
Runway 18
- Heading
- 185 magnetic, 178 true
- Traffic pattern
- left
- Threshold elevation
- 611.0 ft.
- Obstructions
- 18 ft. trees, 65 ft. right of centerline
Runway 36
- Heading
- 005 magnetic, 358 true
- Traffic pattern
- left
- Threshold elevation
- 626.0 ft.
- Obstructions
- CTLG OBSTN EXCEEDS A 45 DEG SLP. APCH RATIO 16:1 TO THR OVR +76 FT TREE, 1244 FT DIST, 42 FT L. APCH RATIO 20:1 OVR 27 FT PLINE, 570 FT DIST, 125 FT L/R.
Communications
- Control Tower
- no
- Ctaf
- 122.9
Airport data aggregated from public FAA/AirNav sources for reference only — always consult official charts and NOTAMs for flight planning.