| KEKS
Airport
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Ennis Big Sky
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Ennis, Montana
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FAA NFDC Information Effective 56-day cycle 11/27/2025 - 1/22/2026
| FAA/ICAO Identifier: | EKS / KEKS |
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| Lat/Lng: | 45.2757247222, -111.648915556
45-16-32.6090N, 111-38-56.0960W
Estimated by 3rd Party Survey on 11/08/2020 |
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| Elevation: | 5432 feet Surveyed by 3rd Party Survey on 11/08/2020 |
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| Magnetic Variation: | 12E,(2015), [11E (2025)] |
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| Sectional: | GREAT FALLS |
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| From City: | 6nm SE of Ennis |
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| Use: | Open to the public |
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| Ownership: | Publicly owned |
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| Activation: | 08/1975 |
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| Attended: | All year Every day 0700-1700 (local) |
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| Control Tower: | no |
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| ARTCC: | Salt Lake City(ZLC)Salt Lake City Center |
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| FSS: | Great Falls FSS(GTF) |
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| NOTAMs and Weather: | GTFNOTAM-D service at airport |
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| Wind Indicator: | Lighted |
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| Segmented Circle: | yes |
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| Lights: | Activate MIRL Runway 16/34 - CTAF. PAPI Runway 16 & 34 Operating Continuously. |
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| Beacon: | Sunset-Sunrise |
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| Landing Fee: | no |
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| CTAF: | 122.800 |
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| UNICOM: | 122.800 |
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| Weather: | AWOS-3P 406-682-3835 119.85 |
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| Approach: | | Contact 'BIG SKY' Approach | | 118.975, | 226.675 |
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| Departure: | | Contact 'BIG SKY' Departure | | 118.975, | 226.675 |
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| Master Airport: | BOI (BOISE AIR TRML/GOWEN FLD) |
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| Fuel: | Grade 100LL Gasoline (low lead blue)
Jet A-1 - Kerosene, freeze point -50C
Jet A-1 - Kerosene, with Icing Inhibitor, freeze point -50C |
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| Airframe Repair: | Minor |
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| Powerplant Repair: | Minor |
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| Transient Storage: | Hanger,Tie-Down |
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| Other Services: | Air Ambulance, Charter, Pilot Instruction, Aircraft Rental |
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| Owner: | Madison County
Madison County Courthouse, Po Box 278
Virginia City, Mt 59755-0278
406-843-4277 |
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| Manager: | Troy Hunter
35 Airport Road
Ennis, Mt 59729
406-682-7502 |
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|
Runway 16/34
| Length: | 7600 feet
by 3rd Party Survey on 11/08/2020 |
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| Width: | 100 feet |
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| Surface: | Asphalt / Bituminous Concrete, Excellent Condition |
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| Surface Treatment: | Saw-cut or Plastic Grooved |
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| Classification (PCN): | 34 /F/B/X/U, 34 , Flexible, Subgrade Strength Medium (represents CBR > 8), Tire pressure Medium (limited to 218 psi), Determined using Aircraft |
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| Weight Capacity: | Single Wheel aircraft: 87,000 lbs
Dual Wheel aircraft: 138,000 lbs
Dual Tandem Wheel aircraft: 236,000 lbs |
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| Runway Lights Edge Intensity: | Med Intensity |
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|
End 16 |
End 34 |
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| True Alignment: | 177,(166 Magnetic) | 357,(346 Magnetic) |
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| Right Hand Pattern: | Yes | |
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| Runway Markings: | Nonprecision Instrument,16/34 1020 ft Dist Mkrs Each End.,Good Condition | Nonprecision Instrument,Good Condition |
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| Elevation at End: | 5432.6' MSL | 5348.9' MSL |
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| Elevation at Touchdown Zone: | 5432.6' MSL | 5369.7' MSL |
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| Threshold Crossing Glide Path Height: | 38' AGL | 40' AGL |
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| Visual Glide Path Angle: | 3.00° | 3.00° |
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| Visual Glide Slope Indicator: | 4-light PAPI on left side of runway | 4-light PAPI on left side of runway |
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| Objects: | Fence | |
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| Objects affecting Navigable Airspace (CFR part 77): | Other than utility runway with a nonprecision approach having visibility minimums greater than 3/4 mile | Other than utility runway with a nonprecision approach having visibility minimums greater than 3/4 mile |
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| Object Clearance Slope: | 27:1 | 34:1 |
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| Object Height: | 56' AGL | |
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| Object Distance: | 1765' Along centerline
350' Right of centerline | |
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| • | Airfield Surface Condition Unmonitored 1700-0700. |
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| • | for Service After Hours Call (406) 682-7502. |
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| • | After Hours Credit Card Fueling. |
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| • | De-Icing Type 1 Available. |
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| • | for Cd Contact Big Sky Approach at 208-364-5860/5861, If Unable Contact Salt Lake ARTCC at 801-320-2568. |
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| • | Cold Temperature Airport. Altitude Correction Required at or Below -24C. |
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