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81LL Otterbach Farm Airport
Mendota, Illinois, USA

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FAA INFORMATION EFFECTIVE 10 JULY 2025

Location

FAA Identifier: 81LL
Lat/Long: 41-34-09.1180N 089-10-25.3130W
41-34.151967N 089-10.421883W
41.5691994,-89.1736981
(estimated)
Elevation: 840 ft. / 256 m (estimated)
Variation: 00E (1985)
From city: 2 miles NW of MENDOTA, IL
Time zone: UTC -5 (UTC -6 during Standard Time)
Zip code: 61342

Airport Operations

Airport use: Private use. Permission required prior to landing
Activation date: 05/1979
Control tower: no
ARTCC: CHICAGO CENTER
FSS: KANKAKEE FLIGHT SERVICE STATION
Attendance: UNATNDD
Segmented circle: no

Airport Communications

WX AWOS-3 at VYS (13 nm S): 120.025 (815-223-8442)
WX AWOS-3 at RPJ (20 nm N): 125.2 (815-562-2955)

Nearby radio navigation aids

VOR radial/distance  VOR name  Freq  Var
BDFr037/30.8BRADFORD VORTAC114.7000E
JOTr270/38.4JOLIET VOR/DME112.3002E

Airport Services

Runway Information

Runway NW/SE

Dimensions: 1600 x 70 ft. / 488 x 21 m
Surface: turf
RUNWAY NW  RUNWAY SE
Traffic pattern: leftleft

Airport Ownership and Management from official FAA records

Ownership: Privately-owned
Owner: DEAN L. OTTERBACH
RR 1
MENDOTA, IL 61342
Phone 815-538-7102
Manager: DEAN L. OTTERBACH
RR 1
MENDOTA, IL 61342
Phone 815-538-7102
KEN OTTERBACK 35461 N 2900TH RD MENDOTA, IL 61342 (815) 538-7102

Additional Remarks

OWNER DESIRES ARPT NOT BE CHARTED.
FOR CD CTC CHICAGO ARTCC AT 630-906-8921.

Instrument Procedures

There are no published instrument procedures at 81LL.

Some nearby airports with instrument procedures:

KVYS - Illinois Valley Regional Airport-Walter A Duncan Field (13 nm S)
KRPJ - Rochelle Municipal Airport/Koritz Field (20 nm N)
C73 - Dixon Municipal Airport-Charles R. Walgreen Field (20 nm NW)
KSQI - Whiteside County Airport/Jos H Bittorf Field (25 nm NW)
KDKB - De Kalb Taylor Municipal Airport (30 nm NE)
 
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Area around 81LL (Otterbach Farm Airport)
 
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Airport distance calculator
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From to 81LL

Sunrise and sunset
Times for 23-Jul-2025
 Local
(UTC-5)
 Zulu
(UTC)
Morning civil twilight05:1110:11
Sunrise05:4410:44
Sunset20:2301:23
Evening civil twilight20:5501:55

Current date and time
Zulu (UTC)  23-Jul-2025 17:52:40
Local (UTC-5)  23-Jul-2025 12:52:40
 
METAR
KVYS 
13nm S 
231735Z AUTO 19004KT 10SM SCT024 32/28 A3002 RMK AO2 T03170276
KRPJ 
19nm N 
231735Z AUTO 18012G15KT 10SM SCT019 SCT025 31/26 A3001 RMK AO2 T03060257
TAF
KRFD 
38nm N 
231307Z 2313/2412 16008KT P6SM SCT040 FM231530 19012G19KT P6SM SCT040 FM240100 20009KT P6SM FEW250
KDPA 
46nm NE 
231304Z 2313/2412 18011KT P6SM VCSH BKN040 FM231500 20013G20KT P6SM SCT050 FM240100 20009KT P6SM FEW050 FEW250
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