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GROSSE ILE MUNI - Airport Diagram
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KONZ
GROSSE ILE MUNI
PublicPUB

2 miles S of DETROIT/GROSSE ILE, MI
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LiveATC.net: Live Air Traffic - From Their Headsets to You
Operational
42° 05' 57"N 83° 09' 41"W
590' MSL
1590' MSL
07W
JET A, 100LL
LANSING (LAN)
DETROIT
CLEVELAND (ZOB)
11/27/25-12/25/25
KONZ VFR
11:35 PM EST  
Clear
10sm
16°F
12°F
30.46"Hg
270° 5kts
AO2
METAR KONZ 150435Z AUTO 27005KT 10SM CLR M09/M11 A3046 RMK AO2
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KONZ FBOs

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Millennium Flight
UNICOM: 123.0
Phone: (734) 692-6424
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Grosse Ile Municipal Airport
UNICOM: 123.0
Phone: (734) 675-0155
Other: (734) 692-6424
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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
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Terminal Area Forecast

KDTW (11nm)
Sun, 12/14 10:06 PM EST
Sun, 12/14 10:00 PM EST - Tue, 12/16 1:00 AM EST
VFR
10:00 PM EST - 12:00 AM EST
Scattered 10,000'
6sm
270° 6kts
VFR
12:00 AM EST - 5:00 AM EST
Broken 20,000'
Broken 3,500'
6sm
260° 6kts
VFR
5:00 AM EST - 9:00 AM EST
Light Showers and Snow
Overcast 10,000'
6sm
230° 9kts
VFR
9:00 AM EST - 1:00 PM EST
Overcast 10,000'
6sm
220° 14kts
Gusts 27kts
VFR
1:00 PM EST - 1:00 AM EST
Scattered 10,000'
6sm
230° 15kts
Gusts 20kts
TAF KDTW 150306Z 1503/1606 27006KT P6SM SCT100
   FM150500 26006KT P6SM BKN035 BKN200
   FM151000 23009KT P6SM -SHSN OVC100
   FM151400 22014G27KT P6SM OVC100
   FM151800 23015G20KT P6SM SCT100
KONZ
EffectiveExpiresCategoryNOTAM
Domestic
12/8/25
1404Z
12/29/25
1403Z
!ONZ 12/018 ONZ OBST TOWER LGT (ASR 1001046) 420944.00N0831220.00W (4.3NM NNW ONZ) 931.8FT (337.9FT AGL) U/S 2512081404-2512291403
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
No
MON-FRI 0800-1800
SAT-SUN PRIOR ARNGMT
TOWNSHIP OF GROSSE ILE
PO BOX 129, PO BOX 129
GROSSE ILE, MI 48138
Phone: 734-675-0155
JANEL MACNEE
P.O. BOX 129, PO BOX 129
GROSSE ILE, MI 48138
Phone: 734-675-0155
LANSING FSS (LAN)
Toll Free: 1-800-WX-BRIEF
ONZ
--
ACTVT REIL RWY 04 & 22; PAPI RWY 04, 22, 17, & 35; MIRL RWY 04/22 & 17/35 - CTAF.
N/A
Yes - Lighted
Yes
No
Hanger, Tie-Down
NOT a Landing Rights Airport
NOT an Airport of Entry
Major
Major
None
None
Charter Service
Pilot Instruction
Aircraft Rental

Runway 04/22

4846 ft. x 100 ft.
ASPH  
Good 
NONE 
MED 
 
66,000lbs 
83,000lbs 
105,000lbs 
-- 
  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

4424 ft. x 75 ft.
CONC  
Poor 
NONE 
MED 
 
40,000lbs 
55,000lbs 
90,000lbs 
-- 
  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

25 ft. x 25 ft.
 
CONC 
NONE 
 
 
-- 
-- 
-- 
-- 
  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

25 ft. x 25 ft.
 
CONC 
NONE 
 
 
-- 
-- 
-- 
-- 
  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
A110-1BIRDS & DEER ON & INVOF ARPT.
A110-2ULTRALIGHT & PWRD PRCHT ACT INVOF ARPT.
A110-4FOR 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.