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

GOING TO DETROIT/GROSSE ILE?


FAA INFORMATION EFFECTIVE 30 OCTOBER 2025

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 -5 (UTC -4 during Daylight Saving 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-3: 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-3 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 30 October 2025 at 0901Z to 27 November 2025 at 0900Z.

 
STARs - Standard Terminal Arrivals
FOREY TWO (RNAV)   download (160KB)
GIGGY TWO (RNAV)   download (139KB)
PETTE TWO (RNAV)   download (210KB)
RRALF THREE (RNAV)   download (161KB)
 
IAPs - Instrument Approach Procedures
RNAV (GPS) RWY 04 **CHANGED**   download (191KB)
RNAV (GPS) RWY 22 **CHANGED**   download (198KB)
VOR-A **CHANGED**   download (168KB)
NOTE: Special Alternate Minimums apply **CHANGED**   download (57KB)
 
Departure Procedures
BARII THREE (RNAV)   download (179KB)
CCOBB THREE (RNAV)   download (215KB)
CLVIN THREE (RNAV)   download (198KB)
HHOWE FOUR (RNAV)   download (203KB)
KAYLN THREE (RNAV)   download (183KB)
KZLOV TWO (RNAV)   download (178KB)
LIDDS FOUR (RNAV)   download (202KB)
MIGGY THREE (RNAV)   download (215KB)
PAVYL THREE (RNAV)   download (192KB)
SNDRS THREE (RNAV)   download (230KB)
TRMML FOUR (RNAV)   download (183KB)
ZETTR FOUR (RNAV)   download (225KB)
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)
 
Road maps at: MapQuest Bing Google
 
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
Flying to Grosse Ile Municipal Airport? Find the distance to fly.

From to KONZ

Sunrise and sunset
Times for 22-Nov-2025
 Local
(UTC-5)
 Zulu
(UTC)
Morning civil twilight07:0212:02
Sunrise07:3212:32
Sunset17:0522:05
Evening civil twilight17:3622:36

Current date and time
Zulu (UTC)  22-Nov-2025 07:27:06
Local (UTC-5)  22-Nov-2025 02:27:06
 
METAR
KONZ 220715Z AUTO 35009KT 10SM FEW120 05/M01 A2995 RMK AO2
KDTW 
11nm NW 
220653Z 35009KT 10SM BKN120 BKN200 04/M02 A2996 RMK SLPNO T00401010
CXHA 
12nm E 
220700Z AUTO 01006KT 05/01 RMK AO1 SLP141 T00510010 53007
CYQG 
14nm NE 
220700Z AUTO 36011G16KT 9SM BKN140 OVC160 04/M02 A2995 RMK SLP148
KTTF 
15nm SW 
220715Z AUTO 35008KT 10SM BKN120 05/M01 A2996 RMK AO2
KYIP 
18nm NW 
220653Z 35008KT 10SM CLR 04/M02 A2996 RMK AO2 SLP146 T00391022
KDET 
19nm N 
220653Z 34006KT 10SM CLR 04/M02 A2995 RMK AO2 SLP146 T00391022
TAF
KDTW 
11nm NW 
220520Z 2206/2312 33005KT P6SM SCT100 BKN200 FM221000 33004KT 6SM BR SCT200 FM221400 32005KT P6SM SCT200 FM222100 24005KT P6SM BKN250 FM230100 19006KT P6SM OVC070 FM230700 23007KT P6SM OVC035
CYQG 
14nm NE 
220540Z 2206/2306 34010KT P6SM BKN130 BECMG 2206/2208 FEW150 SCT240 FM221000 34008KT P6SM FEW006 PROB30 2210/2213 BKN006 FM221400 35008KT P6SM FEW025 BECMG 2219/2221 24008KT FM230000 21008KT P6SM FEW020 BKN100 RMK FCST BASED ON AUTO OBS. NXT FCST BY 221200Z
KYIP 
18nm NW 
220520Z 2206/2306 33005KT P6SM SCT100 BKN200 FM221000 33004KT 6SM BR SCT200 FM221400 32005KT P6SM SCT200 FM222100 24005KT P6SM BKN250 FM230100 19006KT P6SM OVC070
KDET 
19nm N 
220520Z 2206/2306 33005KT P6SM SCT100 BKN200 FM221000 33004KT 6SM BR SCT200 FM221400 32005KT P6SM SCT200 FM222100 24005KT P6SM BKN250 FM230100 19006KT P6SM OVC070
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, ...

More info about Grosse Ile Municipal Airport
Phillips 66
100LL Jet A
AS $5.72 $4.80 
 Updated 04-Nov-2025
 
   write
AS=Assisted/Self Service
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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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