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ST CLAIR COUNTY INTL - Airport Diagram
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KPHN
ICAO KPHNIATA PHNLocal PHN
ST CLAIR COUNTY INTL
PublicPUB

5 miles SW of PORT HURON, MI, US
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Status
Operational
Coordinates
42° 54' 39"N 82° 31' 44"W
Elevation
650' MSL
Pattern Alt
1650' MSL
Mag Variation
8°W
Declination
7°W
Fuel
JET A (FSII), 100LL
FSS
LANSING (LAN)
Sectional
DETROIT
ARTCC
CLEVELAND (ZOB)
Data Effective
3/19/26-4/16/26
KPHN VFR
3:55 PM EDT  
Broken 6,000'
Broken 4,700'
Scattered 4,100'
10sm
63°F
54°F
29.79"Hg
140° 6kts
AO2
METAR KPHN 041955Z AUTO 14006KT 10SM SCT041 BKN047 BKN060 17/12 A2979 RMK AO2
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KPHN FBOs

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St. Clair County International Airport
UNICOM: 123.05
Phone: (810) 364-4187
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Titan
As of 4/3
 100LL JET A JET A (FSII) MOGAS UL94
Self Serve 6.00
Full Serve 6.60 5.30
Fuel Notes
Prices include tax
JET A is premixed with Prist (FSII).
Fuel Hours
Fuel services hours 7 a.m. - 5 p.m. EST, 24 hr Avgas self-serve
Volume Discounts
Callout after hours available, service fees apply (810-364-4187).

KPHN Aircraft Service & Maintenance

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Great Lakes Aviation Services LLC
Phone: (810) 364-2181
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Weather and Advisory

AWOS-3P 118.375
(810) 364-7787

Common

CTAF 123.05
ACTVT MALSR RWY 04; REIL RWY 22, 10, & 28; PAPI RWY 10 & 28; HIRL RWY 04/22; MIRL RWY 10/28 - CTAF. PAPI RWY 04 & 22 OPR CONSLY.
UNICOM 123.05

Approach

SELFRIDGE APPROACH 119.6

Departure

SELFRIDGE DEPARTURE 119.6

Center

SELFRIDGE CENTER 126.525
HIGH, APCH/DEP SVC PRVDD BY CLEVELAND ARTCC (ZOB) ON FREQS 126.525/285.525 (ALGONAC RCAG) WHEN SELFRIDGE APCH CTL CLSD.

Terminal Area Forecast

CYZR (11nm)
Sat, 4/4 3:41 PM EDT
Sat, 4/4 4:00 PM EDT - Sat, 4/4 10:00 PM EDT
MVFR
4:00 PM EDT - 4:30 PM EDT
Overcast 2,500'
Scattered 800'
6sm
160° 12kts
Gusts 22kts
IFR
Temporary 4:00 PM EDT - 5:00 PM EDT
Light Showers and Rain and Mist
Overcast 1,500'
Broken 800'
5sm
Calm
IFR
Temporary 4:00 PM EDT - 6:00 PM EDT
Thunderstorm and Rain and Mist
Overcast 1,500'
Broken 600'
1sm
VRB° 25kts
Gusts 35kts
MVFR
4:30 PM EDT - 6:00 PM EDT
Light Showers and Rain
Overcast 2,500'
6sm
200° 15kts
Gusts 28kts
MVFR
Temporary 6:00 PM EDT - 9:00 PM EDT
Light Showers and Rain
Overcast 2,000'
Scattered 800'
6sm
Calm
IFR
6:00 PM EDT - 9:00 PM EDT
Light Showers and Rain and Mist
Overcast 2,000'
Broken 800'
4sm
270° 15kts
Gusts 25kts
VFR
Temporary 9:00 PM EDT - 10:00 PM EDT
Broken 8,000'
Scattered 2,000'
N/A
Calm
MVFR
9:00 PM EDT - 10:00 PM EDT
Overcast 8,000'
Broken 2,000'
6sm
270° 12kts
Gusts 22kts
TAF CYZR 041941Z 0420/0502 16012G22KT P6SM SCT008 OVC025
   TEMPO 0420/0421 5SM -SHRA BR BKN008 OVC015
   FM042030 20015G28KT P6SM -SHRA OVC025
   TEMPO 0420/0422 VRB25G35KT 1SM TSRA BR BKN006 OVC015CB
   FM042200 27015G25KT 4SM -SHRA BR BKN008 OVC020
   TEMPO 0422/0501 P6SM -SHRA SCT008 OVC020
   FM050100 27012G22KT P6SM BKN020 OVC080
   TEMPO 0501/0502 SCT020 BKN080 RMK FCST BASED ON AUTO OBS. NXT FCST BY 050800Z
KPHN
EffectiveExpiresCategoryNOTAM
Domestic
11/13/25
2041Z
5/13/26
2359Z
Runway!PHN 11/014 PHN RWY 22 PAPI U/S 2511132041-2605132359
10/28/25
1605Z
5/31/26
2359Z
Runway!PHN 10/006 PHN RWY 10 PAPI U/S 2510281605-2605312359
FDC
3/10/26
1520Z
!FDC 6/6093 PHN IAP ST CLAIR COUNTY INTL, PORT HURON, MI.
ILS OR LOC RWY 4, AMDT 4...
NDB RWY 4, AMDT 5...
MSA 2700.
2603101520-2803101520EST
No
0800-1700
UNATNDD MAJOR HOLS.
SAINT CLAIR COUNTY
201 MCMORRAN BLVD
PORT HURON, MI 48060
Phone: 810-364-6890
CATHERINE FIORE
177 ASH DR
KIMBALL, MI 48074
Phone: 810-364-6890
LANSING FSS (LAN)
Toll Free: 1-800-WX-BRIEF
PHN
--
ACTVT MALSR RWY 04; REIL RWY 22, 10, & 28; PAPI RWY 10 & 28; HIRL RWY 04/22; MIRL RWY 10/28 - CTAF. PAPI RWY 04 & 22 OPR CONSLY.
N/A
Yes - Lighted
Yes
Yes
Hanger, Tie-Down
NOT a Landing Rights Airport
Airport of Entry
Major
Major
None
None
None

Runway 04/22

5104 ft. x 100 ft.
ASPH  
Good 
GRVD 
HIGH 
 
40,000lbs 
55,000lbs 
90,000lbs 
-- 
  Runway 04 Runway 22
True Heading 36°216°
Traffic Pattern Left Left
Markings PIR PIR
Markings Condition GOOD GOOD
Latitude 42° 54' 17"N 42° 54' 57"N
Longitude 82° 32' 07"W 82° 31' 27"W
Elevation 640' 650'
Threshold Crossing Height 50 ft. AGL 45 ft. AGL
Visual Glide Path Angle 3° 3°
Visual Slope Indicator P4L P4L
Approach Lights MALSR
Centerline Lights No No
Runway End Identifier Lights No Yes

Runway 10/28

4000 ft. x 75 ft.
ASPH  
Good 
NONE 
MED 
 
16,000lbs 
-- 
-- 
-- 
  Runway 10 Runway 28
True Heading 95°275°
Traffic Pattern Left Left
Markings NPI NPI
Markings Condition FAIR FAIR
Latitude 42° 54' 44"N 42° 54' 41"N
Longitude 82° 32' 07"W 82° 31' 13"W
Elevation 643' 650'
Threshold Crossing Height 26 ft. AGL 33 ft. AGL
Visual Glide Path Angle 3° 3.5°
Visual Slope Indicator P4L P4L
Approach Lights
Centerline Lights No No
Runway End Identifier Lights Yes Yes
A110-1DEER & LRG BIRDS ON & INVOF ARPT.
A110-5TSATLC FLTS MUST NTFY US CUST AT 810-985-9541 ONE HR PRIOR TO ENTRY INTO THE US. NTFY US DEPT OF AGRICULTURE AT 810-985-6126 & AMGR 24 HRS PRIOR FOR DISPOSAL OF ACFT INTL TRASH.
A110-7FOR CD CTC SELFRIDGE APCH AT 586-239-5706, WHEN APCH CLSD CTC CLEVELAND ARTCC AT 440-774-0224/0490.
A17-M1UNATNDD MAJOR HOLS.
A24COML & CORPORATE LDG FEE WAIVED WITH FUEL PURCHASE.
A81-APTACTVT MALSR RWY 04; REIL RWY 22, 10, & 28; PAPI RWY 10 & 28; HIRL RWY 04/22; MIRL RWY 10/28 - CTAF. PAPI RWY 04 & 22 OPR CONSLY.
ST CLAIR COUNTY INTL (ICAO: KPHN, IATA: PHN) is a public airport located in PORT HURON, MI, US.