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KONZ Grosse Ile Municipal Airport
Detroit/Grosse Ile, Michigan, USA

GOING TO DETROIT/GROSSE ILE?

FAA INFORMATION EFFECTIVE 19 MARCH 2026

Location

FAA Identifier: ONZ
Lat/Long: 42-05-56.6810N 083-09-41.2560W
42-05.944683N 083-09.687600W
42.0990781,-83.1614600
(estimated)
Elevation: 590.5 ft. / 180.0 m (surveyed)
Variation: 07W (2010)
From city: 2 miles S of central business district of the associated city
Time zone: UTC -4 (UTC -5 during Standard Time)
Zip code: 48138

Airport Operations

Airport use: Open to the public
Activation date: 05/1941
Control tower: no
ARTCC: CLEVELAND CENTER
FSS: LANSING FLIGHT SERVICE STATION
NOTAMs facility: ONZ (NOTAM-D service available)
Attendance: MON-FRI 0800-1800, ALL SAT-SUN PRIOR ARNGMT
Wind indicator: lighted
Segmented circle: yes
Lights: ACTVT REIL RWY 04 & 22; PAPI RWY 04, 22, 17, & 35; MIRL RWY 04/22 & 17/35 - CTAF.
Beacon: white-green (lighted land airport)
Operates sunset to sunrise.
Airline operations: ARPT CLSD TO ACR OPS GTR THAN 30 PAX SEATS EXC PPR CALL AMGR.

Airport Communications

CTAF/UNICOM: 123.0
WX AWOS-3P: 119.675 (734-692-9686)
DETROIT APPROACH: 134.3
DETROIT DEPARTURE: 134.3
WX ASOS at DTW (11 nm NW): PHONE 231-202-2054
WX AWOS-3P at TTF (15 nm SW): 119.075 (734-384-0259)
WX ASOS at YIP (19 nm NW): PHONE 734-961-6843
WX ASOS at DET (20 nm N): PHONE 313-371-9696

Nearby radio navigation aids

VOR radial/distance  VOR name  Freq  Var
DXOr133/11.4DETROIT VOR/DME113.4006W
CRLr080/13.5CARLETON VOR/DME115.7003W
SVMr137/26.7SALEM VORTAC114.3003W

Airport Services

Fuel available: 100LL JET-A
Parking: hangars and tiedowns
Airframe service: MAJOR
Powerplant service: MAJOR
Bottled oxygen: NONE
Bulk oxygen: NONE

Runway Information

Runway 4/22

Dimensions: 4846 x 100 ft. / 1477 x 30 m
Surface: asphalt, in good condition
Weight bearing capacity: 
Single wheel: 66.0
Double wheel: 83.0
Double tandem: 105.0
Runway edge lights: medium intensity
RUNWAY 4  RUNWAY 22
Latitude: 42-05.601227N42-06.289745N
Longitude: 083-09.742193W083-09.200983W
Elevation: 576.8 ft.589.3 ft.
Traffic pattern: rightleft
Runway heading: 037 magnetic, 030 true217 magnetic, 210 true
Displaced threshold: no428 ft.
Markings: nonprecision, in good conditionnonprecision, in good condition
Visual slope indicator: 4-light PAPI on left (3.04 degrees glide path)4-light PAPI on left (3.04 degrees glide path)
Runway end identifier lights: yesyes
Touchdown point: yes, no lightsyes, no lights
Obstructions: 37 ft. tree, 790 ft. from runway, 308 ft. left of centerline, 15:1 slope to clear65 ft. trees, 1010 ft. from runway, 344 ft. left of centerline, 12:1 slope to clear
APCH RATIO 20:1 TO DTHR.

Runway 17/35

Dimensions: 4424 x 75 ft. / 1348 x 23 m
Surface: concrete, in poor condition
EXTSV PEELING & CRACKING - FOD HAZ.
Weight bearing capacity: 
Single wheel: 40.0
Double wheel: 55.0
Double tandem: 90.0
Runway edge lights: medium intensity
RUNWAY 17  RUNWAY 35
Latitude: 42-06.298312N42-05.589238N
Longitude: 083-10.036057W083-09.812280W
Elevation: 581.3 ft.578.3 ft.
Traffic pattern: leftright
Runway heading: 174 magnetic, 167 true354 magnetic, 347 true
Displaced threshold: 672 ft.no
Markings: basic, in fair conditionbasic, in fair condition
Visual slope indicator: 4-light PAPI on left (3.00 degrees glide path)4-light PAPI on left (3.00 degrees glide path)
Runway end identifier lights: nono
Touchdown point: yes, no lightsyes, no lights
Obstructions: 80 ft. trees, 1180 ft. from runway, 40 ft. right of centerline, 12:1 slope to clearnone

Helipad H1

Dimensions: 25 x 25 ft. / 8 x 8 m
Surface: concrete
Latitude: 42-06.319333N
Longitude: 083-09.471333W
Elevation: 595.0 ft.
Traffic pattern: leftleft

Helipad H2

Dimensions: 25 x 25 ft. / 8 x 8 m
Surface: concrete
Latitude: 42-06.318500N
Longitude: 083-09.449667W
Elevation: 594.0 ft.
Traffic pattern: leftleft

Airport Ownership and Management from official FAA records

Ownership: Publicly-owned
Owner: TOWNSHIP OF GROSSE ILE
PO BOX 129, PO BOX 129
GROSSE ILE, MI 48138
Phone 734-675-0155
Manager: JANEL MACNEE
P.O. BOX 129, PO BOX 129
GROSSE ILE, MI 48138
Phone 734-675-0155

Additional Remarks

- BIRDS & DEER ON & INVOF ARPT.
- ULTRALIGHT & PWRD PRCHT ACT INVOF ARPT.
- FOR CD CTC DETROIT APCH AT 734-955-1404.

Instrument Procedures

NOTE: All procedures below are presented as PDF files. If you need a reader for these files, you should download the free Adobe Reader.

NOT FOR NAVIGATION. Please procure official charts for flight.
FAA instrument procedures published for use from 19 March 2026 at 0901Z to 16 April 2026 at 0900Z.
 
STARs - Standard Terminal Arrivals
FOREY TWO (RNAV)   download (160KB)
GIGGY TWO (RNAV)   download (140KB)
PETTE TWO (RNAV)   download (210KB)
RRALF THREE (RNAV)   download (161KB)
 
IAPs - Instrument Approach Procedures
RNAV (GPS) RWY 04 **CHANGED**   download (193KB)
RNAV (GPS) RWY 22 **CHANGED**   download (199KB)
VOR-A **CHANGED**   download (169KB)
NOTE: Special Alternate Minimums apply   download (139KB)
 
Departure Procedures
BARII THREE (RNAV) **CHANGED**   download (180KB)
CCOBB THREE (RNAV) **CHANGED**   download (217KB)
CLVIN THREE (RNAV) **CHANGED**   download (199KB)
HHOWE FOUR (RNAV) **CHANGED**   download (205KB)
KAYLN THREE (RNAV) **CHANGED**   download (185KB)
KZLOV TWO (RNAV) **CHANGED**   download (180KB)
LIDDS FOUR (RNAV) **CHANGED**   download (203KB)
MIGGY THREE (RNAV) **CHANGED**   download (216KB)
PAVYL THREE (RNAV) **CHANGED**   download (193KB)
SNDRS THREE (RNAV) **CHANGED**   download (231KB)
TRMML FOUR (RNAV) **CHANGED**   download (184KB)
ZETTR FOUR (RNAV) **CHANGED**   download (227KB)
NOTE: Special Take-Off Minimums/Departure Procedures apply   download (208KB)

Other nearby airports with instrument procedures:

KDTW - Detroit Metro Wayne County Airport (11 nm NW)
KTTF - Custer Airport (15 nm SW)
KYIP - Willow Run Airport (19 nm NW)
1D2 - Canton-Plymouth-Mettetal Airport (20 nm NW)
KDET - Coleman A Young Municipal Airport (20 nm N)
  
Loc | Ops | Rwys | IFR | FBO | Links
Com | Nav | Svcs | Stats | Notes
Area around KONZ (Grosse Ile Municipal Airport)
 
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Aerial photo
WARNING: Photo may not be current or correct
Aerial photo of KONZ (Grosse Ile Municipal Airport)
Photo by Cathy Vajtay
Photo taken 21-Jun-2015
looking southeast.
Do you have a better or more recent aerial photo of Grosse Ile Municipal Airport that you would like to share? If so, please send us your photo.

 
Sectional chart

 
Airport distance calculator
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From to KONZ

Sunrise and sunset
Times for 01-Apr-2026
 Local
(UTC-4)		 Zulu
(UTC)
Morning civil twilight06:4810:48
Sunrise07:1611:16
Sunset19:5723:57
Evening civil twilight20:2500:25

Current date and time
Zulu (UTC)  01-Apr-2026 09:14:32
Local (UTC-4)  01-Apr-2026 05:14:32
 
METAR
KONZ 010855Z AUTO 01011KT 10SM OVC016 04/02 A3010 RMK AO2
KDTW 
11nm NW 		010853Z 01014KT 10SM SCT008 OVC014 04/01 A3010 RMK AO2 SLP195 T00390006 53024 $
CXHA 
12nm E 		010800Z AUTO 02013G20KT 05/04 RMK AO1 PK WND 03020/0710 SLP178 T00450035 51027
CYQG 
14nm NE 		010800Z AUTO 01017G24KT 9SM OVC014 04/01 A3007 RMK SLP185
KTTF 
15nm SW 		010855Z AUTO 01012KT 10SM -RA OVC015 05/02 A3010 RMK AO2
KYIP 
18nm NW 		010853Z 35009KT 10SM OVC013 04/01 A3010 RMK AO2 SLP193 T00390011 53022
KDET 
19nm N 		010853Z 36015G25KT 10SM OVC016 04/00 A3010 RMK AO2 PK WND 01026/0832 SLP193 T00390000 51023
TAF
KDTW 
11nm NW 		010520Z 0106/0212 35011KT P6SM OVC015 FM010900 01008KT P6SM SCT008 OVC015 FM011200 02010KT P6SM BKN015 OVC200 FM011600 05010KT P6SM SCT025 OVC070 FM012000 05010KT P6SM SCT020 OVC040 PROB30 0120/0123 5SM -SHRA FM020600 06008KT P6SM OVC025
CYQG 
14nm NE 		010540Z 0106/0206 36012G22KT P6SM SCT008 OVC012 TEMPO 0106/0112 SCT012 BKN025 FM011200 02012KT P6SM BKN015 OVC140 TEMPO 0112/0117 SCT015 BKN140 OVC220 BECMG 0113/0115 03012G22KT FM011700 03010G20KT P6SM SCT020 OVC140 FM012000 03010G20KT P6SM -SHRA BKN020 OVC050 FM012300 03010G20KT P6SM BKN025 OVC050 BECMG 0201/0203 04010KT FM020500 06010G20KT P6SM OVC020 RMK FCST BASED ON AUTO OBS. NXT FCST BY 011200Z
KYIP 
18nm NW 		010520Z 0106/0206 35011KT P6SM OVC015 FM010900 01008KT P6SM SCT008 OVC015 FM011200 02010KT P6SM BKN015 OVC200 FM011600 05010KT P6SM SCT025 OVC070 FM012000 05010KT P6SM SCT020 OVC040 PROB30 0120/0123 5SM -SHRA
KDET 
19nm N 		010520Z 0106/0206 35011KT P6SM OVC015 FM010900 01008KT P6SM SCT008 OVC015 FM011200 02010KT P6SM BKN015 OVC200 FM011600 05010KT P6SM SCT025 OVC070 FM012000 05010KT P6SM SCT020 OVC040 PROB30 0120/0123 5SM -SHRA
NOTAMs
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FBO, Fuel Providers, and Aircraft Ground Support

  
 Business Name 		 
 Contact 		 
 Services / Description 		 
Fuel Prices		 
Comments		  
 Grosse Ile Municipal Airport
 734-675-0155
734-692-6424
[web site]
[email]		 Airport management, Aviation fuel, Aircraft parking (ramp or tiedown), Hangars, Hangar leasing / sales, Passenger terminal and lounge, ...
 
Multi Service® Aviation Card  
 
More info about Grosse Ile Municipal Airport
Phillips 66
100LL Jet A
AS $5.95 $6.50 
 Updated 31-Mar-2026
  
   write
AS=Assisted/Self Service
Update Fuel Prices
 

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Other Pages about Grosse Ile Municipal Airport

www.grosseileairport.com
Page from the Michigan Airport Directory (PDF)
 
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