Bancroft East Private
4WI1 · Rio, WI · Non-towered · Print kneeboard · Open on the map
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Weather
METAR observed
TAF forecast
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Sun & FAA night2026-09-18 · night begins 07:30 PM
| Event | Local (CDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 06:11 AM | 11:11Z |
| Sunrise | 06:39 AM | 11:39Z |
| Sunset | 07:02 PM | 00:02Z |
| Evening civil twilight Loggable night begins | 07:30 PM | 00:30Z |
Plan a flight from 4WI1
Winds aloft NOAA forecast · 3,000 to 53,000 ft
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Full reports: nearest reporting station
Advisories
NOTAMs · Loading NOTAMs…
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Airspace hazards · Checking SIGMETs and G-AIRMETs…
Temporary flight restrictions · Checking for TFRs…
Runways
RWY 24LEFT traffic
- Heading
- 240° mag · 240° true
- Dimensions
- 2,600 × 70 ft
- TPA
- 1,800 ft MSL (≈1,000 AGL) · standard
- Surface
- Turf
Enter the left downwind (heading 060°) on the 45° at 1,800 ft MSL (≈1,000 AGL).
Pattern side: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: schematic (headings + lengths)
| Runway | Length | Your margin |
|---|---|---|
| 06/24 | 2,600 ft |
Prefer one flat page? Full runway details for 4WI1 → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the 4WI1 kneeboard →
Comms & NavAids
Nearby navigation aids
MSN 108.60 · DLL 117.00
| NavAid | Type | Freq · ch | Range | Radial / Dist magnetic |
|---|---|---|---|---|
| MSN · Madison | VORTAC | 108.60 · 23X | Low | r016° / 21.4 NM |
| DLL · Dells | VORTAC | 117.00 · 117X | High | r096° / 25.6 NM |
Charts & procedures
No published instrument procedures or Chart Supplement for 4WI1 — open it on the VFR sectional →
Airport info
Airport information
- FAA LID
- 4WI1
- Coordinates
- 43.4833, -89.1834
- Elevation
- 840 ft MSL
- Magnetic variation
- 0E
- Sectional chart
- CHICAGO
- Airport use
- Private
- Control tower
- No
- ARTCC
- CHICAGO (ZAU)
- Flight service (FSS)
- GREEN BAY · 122.2 · 1-800-WX-BRIEF
- Attendance
- UNATNDD
- Segmented circle
- No
- Wind indicator
- yes
- Activated
- 1989/07
- Distance from city
- 1 E
Ownership & management 2 contacts
Remarks FAA · 1 notes
General
- FOR CD CTC CHICAGO ARTCC AT 630-906-8921.
Nearby airports
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Also nearby: 7WI2 Higgins (private) (2 NM) · WS15 Mill House Field (private) (4 NM) · 94C Gilbert Field (4 NM) · WN39 Knutson Field (private) (6 NM) · 7WI6 Weatherbee Field (private) (8 NM) · 6WN6 Fountain Prairie (private) (10 NM)
About 4WI1
Bancroft East (4WI1) is an airport in Rio, WI, at 840 ft MSL. It has 1 runway, the longest 2,600 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 4WI1, refreshed from the Aviation Weather Center and FAA NASR.
Does 4WI1 have a control tower?
No. Bancroft East is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM in the Comms & NavAids section.
What is the longest runway at 4WI1?
Bancroft East has 1 runway; the longest is 2,600 ft. See the Runways section for headings, surface, and lighting.
Where is 4WI1?
Bancroft East is in Rio, WI, at an elevation of 840 ft MSL. Coordinates: 43.4833, -89.1834.
More about 4WI1
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 4WI1 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.