AirNav: 4WI1 - Bancroft East Airport

4WI1

Bancroft East Airport
Rio, Wisconsin, USA

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FAA INFORMATION EFFECTIVE 01 OCTOBER 2026

Location

FAA Identifier:	4WI1
Lat/Long:	43-28-59.9460N 089-11-00.4120W 43-28.999100N 089-11.006867W 43.4833183,-89.1834478 (estimated)
Elevation:	840 ft. / 256 m (estimated)
Variation:	00E (1985)
From city:	1 mile E of RIO, WI
Time zone:	UTC -5 (UTC -6 during Standard Time)
Zip code:	53960

Airport Operations

Airport use:	Private use. Permission required prior to landing
Activation date:	07/1989
Control tower:	no
ARTCC:	CHICAGO CENTER
FSS:	GREEN BAY FLIGHT SERVICE STATION
Attendance:	UNATNDD
Wind indicator:	yes
Segmented circle:	no

Nearby radio navigation aids

VOR radial/distance		VOR name		Freq		Var
MSNr016/21.4		MADISON VORTAC		108.60		03E
DLLr096/25.6		DELLS VORTAC		117.00		03E

NDB name		Hdg/Dist		Freq		Var		ID
ROCK RIVER		314/27.3		371		01W		RYV	.-. -.-- ...-

Airport Services

Runway Information

Runway 6/24

Dimensions:	2600 x 70 ft. / 792 x 21 m
Surface:	turf
	RUNWAY 6	RUNWAY 24
Traffic pattern:	left	left
Obstructions:	pline, 625 ft. from runway	none

Airport Ownership and Management from official FAA records

Ownership:	Privately-owned
Owner:	DAVID BANCROFT W3798 OLD B RD. RIO, WI 53960 Phone (920) 319-2009
Manager:	M. JAMES BANCROFT W3758 OLD B RD. RIO, WI 53960 Phone 920-348-5738

Additional Remarks

-	FOR CD CTC CHICAGO ARTCC AT 630-906-8921.

Instrument Procedures

There are no published instrument procedures at 4WI1.

Some nearby airports with instrument procedures:

C47 - Portage Municipal Airport (14 nm W)
KUNU - Dodge County Airport (21 nm E)
KMSN - Dane County Regional Airport-Truax Field (22 nm S)
87Y - Blackhawk Airfield (23 nm S)
KDLL - Baraboo/Wisconsin Dells Regional Airport (26 nm W)

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Area around 4WI1 (Bancroft East Airport)

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Aerial photo

Sectional chart

Airport distance calculator
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Sunrise and sunset

Times for 15-Oct-2026

	Local (UTC-5)	Zulu (UTC)
Morning civil twilight	06:43	11:43
Sunrise	07:12	12:12
Sunset	18:13	23:13
Evening civil twilight	18:42	23:42

Current date and time

Zulu (UTC)	15-Oct-2026 19:37:28
Local (UTC-5)	15-Oct-2026 14:37:28

METAR

KUNU 21nm E	151918Z AUTO 08005KT 2 1/2SM RA OVC006 13/13 A2993 RMK AO2 VIS 2V4 T01250125
KMSN 22nm S	151853Z 10005KT 2SM -RA BR OVC006 13/13 A2992 RMK AO2 SFC VIS 5 CIG 004V010 SLP132 P0011 T01330128
KDLL 26nm W	151915Z AUTO 07006KT 5SM RA OVC004 12/11 A2992 RMK AO2 P0003 T01160113
KC29 27nm SW	151915Z AUTO 00000KT 10SM OVC006 14/13 A2991 RMK AO1 T01390134
KRYV 28nm SE	151915Z AUTO 14003KT 7SM -DZ OVC005 14/14 A2991 RMK AO2 T01420137
KY50 34nm N	151856Z AUTO 06008KT 5SM RA BR BKN006 OVC010 11/11 A2996 RMK AO2 CIG 004V008 PRESFR SLP147 P0014 T01110111
KFLD 35nm NE	151853Z AUTO 04006KT 2SM +RA BR BKN007 OVC011 12/12 A2995 RMK AO2 SLP143 P0019 T01220117
KC35 35nm W	151915Z AUTO 08004KT 5SM OVC003 12/12 A2991 RMK AO2 P0004 T01210116
KOSH 40nm NE	151853Z 09008KT 2 1/2SM RA BR BKN007 OVC011 12/12 A2996 RMK AO2 CIG 006V010 SLP145 P0015 T01220117

TAF

KMSN
22nm S

151728Z 1518/1618 11006KT 2SM -RA OVC006 FM152300 VRB03KT 1SM -RA OVC004 FM160300 30013G22KT P6SM OVC006 FM160500 30014G24KT P6SM OVC010 FM161500 33017G26KT 6SM -SHRA OVC015

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