Grosse Ile Municipal
ONZ · KONZ · Detroit/Grosse Ile, Michigan · Wayne County · map
Grosse Ile Municipal is a public-use airport, 2 miles south of Detroit/Grosse Ile, Michigan, 590 feet above sea level. It has 4 runways; the longest, 04/22, is 4,846 feet of asphalt. It has fuel (100LL avgas, Jet A).
Weather right now KONZ · observed 3:35 pm EDT (19:35 UTC), 21 minutes ago
VFR good flying weather
- Wind from the south (180°) at 11 knots
- Visibility 10 miles or more
- Temperature 63°F (17°C), dew point 46°F (8°C)
- Altimeter 30.07 inHg
No terminal forecast is issued for this station. The nearest forecast is usually at the closest larger airport.
The codes as issued (METAR and TAF)
METAR KONZ 061935Z AUTO 18011KT 10SM CLR 17/08 A3007 RMK AO2
From the National Weather Service's aviation weather service, refreshed every few minutes; times are local to the airport with UTC in brackets. For a flight, get your briefing from Flight Service or an approved provider.
The airport
- Codes
- FAA ONZ · ICAO KONZ
- Kind
- Airport · open to the public · publicly owned
- Elevation
- 590 feet above sea level
- Control tower
- No control tower
- Attended
- Monday to Friday, 8:00 am to 6:00 pm; weekends, prior arngmt
- Lights
- runway lights see the remarks below; beacon sunset to sunrise
- Fuel
- 100LL avgas, Jet A
- Repairs
- airframe: major repairs; engine: major repairs
- Parking
- hangar, tiedown
- On the chart
- Detroit sectional
- Magnetic variation
- 7W
- In the FAA's files since
- May 1941
Runways 4
Drawn to scale from the FAA's runway positions, north up. Not for navigation.
| Runway | Length × width | Surface | Lights |
|---|---|---|---|
| 04/22 | 4,846 × 100 ft | Asphalt, good | Medium-intensity lights |
| 17/35 | 4,424 × 75 ft | Concrete, poor | Medium-intensity lights |
| H1 | 25 × 25 ft | Concrete | |
| H2 | 25 × 25 ft | Concrete |
- Runway 04: PAPI, four lights on the left, right-hand traffic pattern, tree 37 ft high 790 ft from the end
- Runway 22: PAPI, four lights on the left, threshold displaced 428 ft, trees 65 ft high 1,010 ft from the end
- Runway 17: PAPI, four lights on the left, threshold displaced 672 ft, trees 80 ft high 1,180 ft from the end
- Runway 35: PAPI, four lights on the left, right-hand traffic pattern
Radio frequencies
| Common traffic advisory (CTAF) · UNICOM | 123.0 | |
| Approach and departure | 134.3 | |
| Onz and aWOS-3P | 119.675 |
Automated weather (AWOS-3P), by phone 734-692-9686.
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.
Aircraft registered in Detroit/Grosse Ile from the FAA register
No aircraft on the register list Detroit/Grosse Ile, MI as the owner's town.
Accidents and incidents at or near this airport NTSB records · 6 since 1982, 1 fatal
Cases the NTSB recorded with this as the nearest airport, newest first. Each opens the full report in plain English.
Nearby within 30 nautical miles
The FAA's remarks as written in the airport file
- Birds and deer on and in the vicinity of airport.
- Activate runway end identifier lights runway 04 and 22; PAPI runway 04, 22, 17, and 35; medium-intensity runway lights runway 04/22 and 17/35 - the common traffic frequency.
- Approach ratio 20:1 to dthr.
- Extensive peeling and cracking - fod haz.
- Ultralight and pwrd prcht act in the vicinity of airport.
Facts from the FAA's airport file effective October 1, 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 5, 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.