Sauk/Prairie
91C · Prairie Du Sac, WI · Non-towered · Print kneeboard · Open on the map
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Weather
METAR observed
TAF forecast
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Sun & FAA night2026-11-02 · night begins 05:19 PM
| Event | Local (CST) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 06:05 AM | 12:05Z |
| Sunrise | 06:35 AM | 12:35Z |
| Sunset | 04:49 PM | 22:49Z |
| Evening civil twilight Loggable night begins | 05:19 PM | 23:19Z |
Plan a flight from 91C
Winds aloft NOAA forecast · 3,000 to 53,000 ft
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Full reports: nearest reporting station
Advisories
NOTAMs · Loading NOTAMs…
Pilot reports · Loading PIREPs…
Airspace hazards · Checking SIGMETs and G-AIRMETs…
Temporary flight restrictions · Checking for TFRs…
Runways
RWY 18LEFT traffic
- Heading
- 177° mag · 177° true
- Dimensions
- 2,936 × 60 ft
- TPA
- 1,800 ft MSL (≈1,000 AGL) · standard
- Surface
- Asphalt
- Lights
- 2-light PAPI (left) (3°)
- CTAF
- 122.9
Enter the left downwind (heading 357°) on the 45° at 1,800 ft MSL (≈1,000 AGL).
More details — RWY 18
- Threshold elev
- 831 ft
- Markings
- nonprecision
- Threshold crossing height
- 26 ft
- TDZ elevation
- 832 ft
- End lights
- REIL
Pattern side: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: FAA runway-end coordinates
| Runway | Length | Your margin |
|---|---|---|
| 18/36 | 2,936 ft |
Prefer one flat page? Full runway details for 91C → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the 91C kneeboard →
Comms & NavAids
Communication frequencies
Taxi & takeoff
Departure & arrival
“Madison”Also
ATC assigns the exact frequency (in your clearance or on handoff) — which one depends on your SID (departing) or STAR (arriving).
By procedure & sector (2 frequencies)
| Frequency | Used by |
|---|---|
| 257.925 | LONE ROCK RCAG (LOW) |
| 343.7 | APCH/P DEP/P |
Source: FAA NASR (current 28-day cycle).
Nearby navigation aids
DLL 117.00 · MSN 108.60
| NavAid | Type | Freq · ch | Range | Radial / Dist magnetic |
|---|---|---|---|---|
| DLL · Dells | VORTAC | 117.00 · 117X | High | r176° / 15.2 NM |
| MSN · Madison | VORTAC | 108.60 · 23X | Low | r294° / 20.4 NM |
Prefer one flat list? All 91C frequencies →
Charts & procedures
Airport info
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 · 122.2 · 1-800-WX-BRIEF
- NOTAM facility
- GRB
- Attendance
- UNATNDD
- Beacon
- white-green (SS-SR)
- Segmented circle
- No
- Wind indicator
- lighted
- Activated
- 1963/01
- Distance from city
- 2 W
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 under Sun & FAA night in the Weather section.
Services fuel · repairs · oxygen · attendance
- Fuel available
- 100LL, UL94
- Bottled oxygen
- NONE
- Bulk oxygen
- NONE
- Airframe service
- NONE
- Powerplant service
- NONE
- Parking
- tiedowns
- Other services
- Instruction, Aircraft sales
Ownership & management 2 contacts
Remarks FAA · 10 notes
General
- ULTRALGT & HEL ACT 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.
Lighting
- ACTVT MIRL RY 18/36, REIL RYS 18 & 36, & PAPI RYS 18 & 36 - CTAF.
Fuel
- 24 HR SELF SVC FUEL AVBL WITH CREDIT CARD.
Obstructions
- 25 FT TREES AT RWY END, 225L.
Nearby airports
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Also nearby: 34WI Thiessen Field (private) (7 NM) · WI50 Loeber McDaniel Field (private) (8 NM) · 9WN5 Lodi Lakeland (private) (10 NM) · 5WN2 Eberle Ranch (private) (12 NM) · WI66 Hallick Farm (private) (12 NM) · WI65 Dane (private) (13 NM)
About 91C
Sauk/Prairie (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 is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM in the Comms & NavAids section.
What is the longest runway at 91C?
Sauk/Prairie has 1 runway; the longest is 2,936 ft. See the Runways section for headings, surface, and lighting.
Where is 91C?
Sauk/Prairie is in Prairie Du Sac, WI, at an elevation of 832 ft MSL. Coordinates: 43.2979, -89.7558.
More about 91C
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.
Something here wrong or out of date? Report a data problem.