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KONZ

GROSSE ILE MUNI

PublicPUB

2 miles S of DETROIT/GROSSE ILE, MI

View on Map

Status

Operational

Coordinates

42° 05' 57"N 83° 09' 41"W

Elevation

590' MSL

Pattern Alt

1590' MSL

Mag Variation

07W

Fuel

JET A, 100LL

FSS

LANSING (LAN)

Sectional

DETROIT

ARTCC

CLEVELAND (ZOB)

Data Effective

11/27/25-12/25/25

KONZ VFR

7:35 AM EST RAW

Clear

Viz

10sm

Temp

18°F

Dew

12°F

Pres

30.08"Hg

Wind

240° 6kts

RMK

AO2

METAR KONZ 051235Z AUTO 24006KT 10SM CLR M08/M11 A3008 RMK AO2

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KONZ FBOs

Promote Listing

Grosse Ile Municipal Airport

UNICOM: 123.0

Phone: (734) 675-0155

Other: (734) 692-6424

0 Reviews (Read | Sign In To Write)

Phillips 66

As of 11/28	100LL	JET A	JET A (FSII)	MOGAS	UL94
Self Serve	5.72	4.80
Full Serve	5.72	4.80

Fuel Notes

Prices include tax

Promote Listing

Millennium Flight

UNICOM: 123.0

Phone: (734) 692-6424

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Your Information

Business

UNICOM 123.0 CTAF 123.0

AWOS-3

734-692-9686

119.675

FAA A/FD Pages

FAA A/FD Page

Airport Diagrams

No Documents

Airport Minimums

Departure Procedures

Hotspot

No Documents

Standard Term. Arrival

Instrument Approach

Terminal Area Forecast

KDTW (11nm)

RAW

Reported

Fri, 12/5 6:38 AM EST

Valid

Fri, 12/5 7:00 AM EST - Sat, 12/6 1:00 PM EST

VFR

7:00 AM EST - 8:00 AM EST

Few 20,000'

Viz

6sm

Wind

200° 5kts

VFR

8:00 AM EST - 12:00 PM EST

Scattered 20,000'

Viz

6sm

Wind

210° 8kts

VFR

12:00 PM EST - 5:00 PM EST

Broken 15,000'
Scattered 4,500'

Viz

6sm

Wind

220° 10kts

Gusts 18kts

VFR

5:00 PM EST - 1:00 AM EST

Broken 7,000'

Viz

6sm

Wind

210° 10kts

VFR

1:00 AM EST - 5:00 AM EST

Overcast 5,000'
Few 2,500'

Viz

6sm

Wind

220° 12kts

MVFR

5:00 AM EST - 1:00 PM EST

Overcast 2,500'

Viz

6sm

Wind

230° 11kts

TAF KDTW 051138Z 0512/0618 20005KT P6SM FEW200
   FM051300 21008KT P6SM SCT200
   FM051700 22010G18KT P6SM SCT045 BKN150
   FM052200 21010KT P6SM BKN070
   FM060600 22012KT P6SM FEW025 OVC050
   FM061000 23011KT P6SM OVC025

KONZ

Effective	Expires	Category	NOTAM
Domestic
12/4/25 1347Z	12/5/25 1347Z		!ONZ 12/008 ONZ APRON ALL FICON 1/2IN DRY SN OBS AT 2512041344. 2512041347-2512051347
12/4/25 1346Z	12/5/25 1346Z		!ONZ 12/007 ONZ TWY ALL FICON 1/2IN DRY SN OBS AT 2512041344. 2512041346-2512051346
12/4/25 1345Z	12/5/25 1345Z	Runway	!ONZ 12/006 ONZ RWY 22 FICON 3/3/3 50 PCT 1/2IN DRY SN OBS AT 2512041345. 2512041345-2512051345
11/10/25 2303Z	12/25/25 2303Z		!ONZ 11/002 ONZ OBST TOWER LGT (ASR 1006094) 421005.00N0831254.00W (4.8NM NNW ONZ) 1305.1FT (710.0FT AGL) U/S 2511102303-2512252303
9/4/25 1731Z		Runway	!ONZ 09/005 ONZ RWY 22 RWY END ID LGT U/S 2509041731-2512312111EST
9/4/25 1730Z		Runway	!ONZ 09/004 ONZ RWY 04 RWY END ID LGT U/S 2509041730-2512312111EST
9/4/25 1729Z		Runway	!ONZ 09/003 ONZ RWY 04 PAPI U/S 2509041729-2512312111EST
9/4/25 1728Z	12/31/25 2359Z	Runway	!ONZ 09/001 ONZ RWY 22 PAPI U/S 2509041728-2512312359
5/22/25 1535Z	12/31/25 2359Z		!ONZ 05/009 ONZ AD AP WILDLIFE HAZARD NEAR MOV AREAS 2505221535-2512312359
5/22/25 1534Z	12/31/25 2359Z	Runway	!ONZ 05/008 ONZ RWY 17/35 CLSD 2505221534-2512312359
FDC
12/2/25 1348Z			!FDC 5/3140 ONZ IAP GROSSE ILE MUNI, DETROIT/GROSSE ILE, MI. RNAV (GPS) RWY 4, ORIG-B... CHANGE MISSED APPROACH INSTRUCTIONS TO READ: CLIMB TO 2500 DIRECT UFDIV AND HOLD. TEMPORARY CRANE 1449FT MSL 11.3NM NE OF RWY 22 (2024-AGL-8166-OE). 2512021348-2607141348EST
12/2/25 1348Z			!FDC 5/3138 ONZ IAP GROSSE ILE MUNI, DETROIT/GROSSE ILE, MI. RNAV (GPS) RWY 22, AMDT 2... HOLD IN LIEU OF PT (UFDIV IF/IAF) MINIMUM ALTITUDE 2500. INTERMEDIATE FIX CROSSING ALTITUDE AT UFDIV 2500. INITIAL SEGMENT YEGHI (IAF) TO UFDIV (IF/IAF) MINIMUM ALTITUDE 2500. TEMPORARY CRANE 1449FT MSL 11.3NM NE OF RWY 22 (2024-AGL-8166-OE). 2512021348-2607141348EST
11/27/25 0901Z			!FDC 5/1506 ONZ CHART GROSSE ILE MUNI, DETROIT/GROSSE ILE, MI. ALTERNATE MINIMUMS ... CORRECT ALTERNATE MINIMUMS: ALTERNATE MINIMUMS WERE INADVERTENTLY DELETED. FOR A CORRECTED COPY OF EC1 ALTERNATE MINIMUMS SEE 25-08 TERM SAFETY ALERT AT HTTPS://WWW.FAA.GOV/AIR_TRAFFIC/FLIGHT_INFO/AERONAV/SAFETY_ALERTS/. 2511270901-PERM

ATC Tower

Attendance

MON-FRI 0800-1800
SAT-SUN PRIOR ARNGMT

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

FSS

LANSING FSS (LAN)
Toll Free: 1-800-WX-BRIEF

NOTAM

ONZ

Light Schedule

Lights

ACTVT REIL RWY 04 & 22; PAPI RWY 04, 22, 17, & 35; MIRL RWY 04/22 & 17/35 - CTAF.

Beacon

N/A

Wind Indicator

Yes - Lighted

Segmented Cir.

Yes

Landing Fee

Parking

Hanger, Tie-Down

Int'l Operations

NOT a Landing Rights Airport
NOT an Airport of Entry

Airframe Repair

Major

Pwrplant Repair

Major

Bottled Oxygen

None

Bulk Oxygen

None

Other Services

Charter Service
Pilot Instruction
Aircraft Rental

Runway 04/22

Dimensions

4846 ft. x 100 ft.

Surface Type

ASPH

Surface Cond

Good

Treatment

NONE

Rwy Edge Lgts

MED

Pavement Class

Single Wheel

66,000lbs

Double Wheel

83,000lbs

Double Tandem

105,000lbs

Dual Dbl Tand

	Runway 04	Runway 22
True Heading	30°	210°
Traffic Pattern	Right	Left
Markings	NPI	NPI
Markings Condition	GOOD	GOOD
Latitude	42° 05' 36"N	42° 06' 17"N
Longitude	83° 09' 45"W	83° 09' 12"W
Elevation	577'	589'
Threshold Crossing Height	40 ft. AGL	40 ft. AGL
Visual Glide Path Angle	3.04°	3.04°
Visual Slope Indicator	P4L	P4L
Approach Lights
Centerline Lights	No	No
Runway End Identifier Lights	Yes	Yes

Runway 17/35

Dimensions

4424 ft. x 75 ft.

Surface Type

CONC

Surface Cond

Poor

Treatment

NONE

Rwy Edge Lgts

MED

Pavement Class

Single Wheel

40,000lbs

Double Wheel

55,000lbs

Double Tandem

90,000lbs

Dual Dbl Tand

	Runway 17	Runway 35
True Heading	167°	347°
Traffic Pattern	Left	Right
Markings	BSC	BSC
Markings Condition	FAIR	FAIR
Latitude	42° 06' 18"N	42° 05' 35"N
Longitude	83° 10' 02"W	83° 09' 49"W
Elevation	581'	578'
Threshold Crossing Height	26 ft. AGL	20 ft. AGL
Visual Glide Path Angle	3°	3°
Visual Slope Indicator	P4L	P4L
Approach Lights
Centerline Lights	No	No
Runway End Identifier Lights	No	No

Runway H1

Dimensions

25 ft. x 25 ft.

Surface Type

Surface Cond

CONC

Treatment

NONE

Rwy Edge Lgts

Pavement Class

Single Wheel

Double Wheel

Double Tandem

Dual Dbl Tand

	Runway H1	Runway
True Heading	95°	275°
Traffic Pattern
Markings
Markings Condition
Latitude	42° 06' 19"N	N/A
Longitude	83° 09' 28"W	N/A
Elevation	595'	--
Threshold Crossing Height	--	--
Visual Glide Path Angle	--	--
Visual Slope Indicator	--	--
Approach Lights
Centerline Lights
Runway End Identifier Lights

Runway H2

Dimensions

25 ft. x 25 ft.

Surface Type

Surface Cond

CONC

Treatment

NONE

Rwy Edge Lgts

Pavement Class

Single Wheel

Double Wheel

Double Tandem

Dual Dbl Tand

	Runway H2	Runway
True Heading	95°	275°
Traffic Pattern
Markings
Markings Condition
Latitude	42° 06' 19"N	N/A
Longitude	83° 09' 27"W	N/A
Elevation	594'	--
Threshold Crossing Height	--	--
Visual Glide Path Angle	--	--
Visual Slope Indicator	--	--
Approach Lights
Centerline Lights
Runway End Identifier Lights

A110-1	BIRDS & DEER ON & INVOF ARPT.
A110-2	ULTRALIGHT & PWRD PRCHT ACT INVOF ARPT.
A110-4	FOR CD CTC DETROIT APCH AT 734-955-1404.

GROSSE ILE MUNI (ICAO: KONZ, IATA: ONZ) is a public airport located in DETROIT/GROSSE ILE, MI.

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