Airport information
- FAA LID
- 91C
- Coordinates
- 43.2979, -89.7558
- Elevation
- 832 ft MSL
- Magnetic variation
- 0E
- Sectional chart
- CHICAGO
- Airport use
- Public
- Control tower
- No
- ARTCC
- CHICAGO (ZAU)
- Flight service (FSS)
- GREEN BAY
- NOTAM facility
- GRB
- Attendance
- UNATNDD
- Beacon
- white-green (SS-SR)
- Segmented circle
- No
- Wind indicator
- lighted
- Activated
- 1963/01
- Distance from city
- 2 W
Weather
METAR observed
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TAF forecast
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Sun & FAA night 2026-06-21
| Event | Local (CDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 04:43 AM | 09:43Z |
| Sunrise | 05:19 AM | 10:19Z |
| Sunset | 08:43 PM | 01:43Z |
| Evening civil twilight Loggable night begins | 09:18 PM | 02:18Z |
Plan a flight from 91C
Night operations
- Airport lighting
- SEE RMK
- Rotating beacon
- white-green · SS-SR
- Pilot-controlled lighting
- ACTVT MIRL RY 18/36, REIL RYS 18 & 36, & PAPI RYS 18 & 36 - CTAF. on 122.9 — Chart Supplement ↗
Runway lighting aids — 18: 2-light PAPI (left) · 36: 2-light PAPI (left).
FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are in the live weather panel above.
Traffic pattern
- Landing
- Rwy 18 · 177°
- Pattern
- left (turns left)
- TPA
- 1,800 ft MSL (≈1,000 AGL)
- CTAF
- 122.9
Enter the left downwind for Rwy 18 at 1,800 ft MSL (≈1,000 AGL) on a 45°. TPA estimated at 1,000 ft AGL (not charted for this field).
Runway 18/36
2,936 ft × 60 ft · Asphalt (Good)- Heading
- 177° mag · 177° true
- Markings
- nonprecision
- VGSI
- 2-light PAPI (left) (3°)
- Traffic pattern
- Left
- Heading
- 357° mag · 357° true
- Markings
- nonprecision
- VGSI
- 2-light PAPI (left) (3°)
- Traffic pattern
- Left
| Runway | Length | Your margin |
|---|---|---|
| 18/36 | 2,936 ft |
Nearby navigation aids
| NavAid | Type | Freq | Radial / Dist magnetic |
|---|---|---|---|
| DLL · Dells | VORTAC | 117.00 | r176° / 15.2 NM |
| LNR · Lone Rock | VOR-DME | 112.80 | r089° / 16.5 NM |
| MSN · Madison | VORTAC | 108.60 | r294° / 20.4 NM |
Chart Supplement FAA A/FD
Open PDF ↗Preview Chart Supplement
VFR sectional
Services
- Fuel available
- 100LL, UL94
- Bottled oxygen
- NONE
- Bulk oxygen
- NONE
- Airframe service
- NONE
- Powerplant service
- NONE
- Parking
- tiedowns
Ownership & management
Remarks FAA
- ULTRALIGHT ACTVTY ON & INVOF ARPT.
- MAINT VEHICLE TFC ON AND INVOF ARPT.
- W RAMP AND TWY PVT, CLSD TSNT.
- AVOID HOSPITAL/HELIPAD 3,000 FT SOUTHEAST OF RY 36 THLD.
- RY 18 DEPS CLIMB TO 1,800 FT MSL ON RY HEADING BFR TURNING EAST/SOUTHEAST.
- TKOFS & LDGS ARE PROHIBITED ON UNPAVED SFCS.
- FOR CD CTC MADISON APP/DEP CON AT 608-249-8240. WHEN MADISON APCH CLSD, FOR CD CTC CHICAGO ARTCC AT 630-906-8921.
- ACTVT MIRL RY 18/36, REIL RYS 18 & 36, & PAPI RYS 18 & 36 - CTAF.
- 24 HR SELF SVC FUEL AVBL WITH CREDIT CARD.
Nearby airports
Weather is live from the Aviation Weather Center; airport facility data is from the FAA NASR (28-day cycle). For planning and education only; always verify against official sources. Open 91C in a full tool: METAR/TAF decoder, crosswind calculator, sun & night times, or the density altitude calculator. Planning from here? Find the nearest airport with fuel or an approach, or check whether an IFR alternate is required.
About 91C
Sauk-Prairie Airport (91C) is an airport in Prairie Du Sac, WI, at 832 ft MSL. It has 1 runway, the longest 2,936 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 91C, refreshed from the Aviation Weather Center and FAA NASR.
Does 91C have a control tower?
No. Sauk-Prairie Airport is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM on the Comms & NavAids tab.
What is the longest runway at 91C?
Sauk-Prairie Airport has 1 runway; the longest is 2,936 ft. See the Runways tab for headings, surface, and lighting.
Where is 91C?
Sauk-Prairie Airport is in Prairie Du Sac, WI, at an elevation of 832 ft MSL. Coordinates: 43.2979, -89.7558.
Fly out of 91C often?
Save 91C as your home base in the SkyReady app for a one-tap Go/No-Go readiness brief, weather alerts, and automatic FAA currency — free to log.