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Grindstone Air Harbor Airport
29C · Port Austin, MI · 640 ft elevation · var 7W · Towered
Airport information
- FAA LID
- 29C
- Coordinates
- 44.0478, -82.9142
- Elevation
- 640 ft MSL
- Magnetic variation
- 7W
- Sectional chart
- LAKE HURON
- Airport use
- Public
- Control tower
- Yes
- ARTCC
- MINNEAPOLIS (ZMP)
- Flight service (FSS)
- LANSING
- NOTAM facility
- LAN
- Attendance
- UNATNDD
- Segmented circle
- No
- Wind indicator
- yes
- Activated
- 1996/11
- Distance from city
- 4 E
Weather
METAR observed
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TAF forecast
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Sun & FAA night 2026-06-20
| Event | Local (EDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 05:12 AM | 09:12Z |
| Sunrise | 05:48 AM | 09:48Z |
| Sunset | 09:18 PM | 01:18Z |
| Evening civil twilight Loggable night begins | 09:54 PM | 01:54Z |
Loggable night (§1.1)
09:54 PM → 05:12 AM
Night currency (§61.57)
10:18 PM → 04:48 AM
Plan a flight from 29C
Runway 18/36
1,800 ft × 85 ft · Turf (Fair) 18
- Heading
- 185° mag · 178° true
- Traffic pattern
- Left
36
- Heading
- 005° mag · 358° true
- Traffic pattern
- Left
Nearby navigation aids
| NavAid | Type | Freq | Radial / Dist magnetic |
|---|---|---|---|
| BAX · Bad Axe | VOR-DME | 108.20 | r016° / 16.2 NM |
| ASP · Au Sable | VOR-DME | 116.10 | r146° / 31.7 NM |
VFR sectional
No published instrument procedures or Chart Supplement for 29C. VFR sectional link above.
Ownership & management
Owner
KELLY J HANSON
330 E HURON AVE, BAD AXE, MI
989-269-7299
Manager
KELLY J HANSON
330 E HURON AVE, BAD AXE, MI
989-269-7299
Remarks FAA
- MAN-MADE OR NATURAL OBJECTS EXIST WI THE ASP NEEDED TO ENSURE SAFETY IN THE TKOF/LDG OF ACFT.
- FOR CD CTC MINNEAPOLIS ARTCC AT 651-463-5588.
- DEER & LRG BIRDS ON & INVOF ARPT.
- 3 FT YELLOW CONES.
- 3 FT YELLOW CONES.
- 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.
- CTLG OBSTN EXCEEDS A 45 DEG SLP. APCH RATIO 20:1 OVR 25 FT PLINE, 720 FT DIST, 125 FT L/R.
Nearby airports
Weather is live from the Aviation Weather Center; airport facility data is from the FAA NASR (28-day cycle). For planning and education only; always verify against official sources. Open 29C in a full tool: METAR/TAF decoder, crosswind calculator, sun & night times, or the density altitude calculator.