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81LL Otterbach Farm Airport
Mendota, Illinois, USA

GOING TO MENDOTA?

FAA INFORMATION EFFECTIVE 27 NOVEMBER 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 -6 (UTC -5 during Daylight Saving 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
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)
  
Loc | Ops | Rwys | IFR | FBO | Links
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Area around 81LL (Otterbach Farm Airport)
 
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Aerial photo
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Sectional chart

 
Airport distance calculator
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From to 81LL

Sunrise and sunset
Times for 29-Nov-2025
 Local
(UTC-6)		 Zulu
(UTC)
Morning civil twilight06:3212:32
Sunrise07:0313:03
Sunset16:2722:27
Evening civil twilight16:5822:58

Current date and time
Zulu (UTC)  30-Nov-2025 01:04:18
Local (UTC-6)  29-Nov-2025 19:04:18
 
METAR
KVYS 
13nm S 		300055Z AUTO 13015KT 1 1/2SM -SN OVC005 00/M01 A2985 RMK AO2 T10051012 TSNO
KSQI 
25nm NW 		300056Z AUTO 12008KT 3SM BR OVC007 M02/M02 A2986 RMK AO2 CIG 005V012 SLP116 T10171017 PWINO FZRANO $
TAF
KRFD 
38nm N 		291740Z 2918/3018 12008KT 1/2SM SN FZFG OVC008 FM292100 12013G21KT 3/4SM -SN BR OVC007 TEMPO 2922/3001 1/2SM SN FZFG VV005 FM300300 02006KT 1SM -SN BR OVC006 FM300800 29016G26KT 3SM -SN BR OVC008 FM301300 30014G23KT P6SM OVC012
KDPA 
46nm NE 		292026Z 2920/3018 13012KT 1/2SM SN FZFG VV007 TEMPO 2920/2922 1/4SM +SN FZFG VV006 FM292200 14013G21KT 3/4SM -SN BR OVC006 TEMPO 2922/3001 1/2SM SN FZFG VV004 FM300400 17010KT 1 1/2SM -SN BR OVC008 FM300900 28015G24KT 3SM -SN OVC012 FM301300 29016G25KT 4SM -SN OVC015 FM301600 30015G23KT P6SM BKN020
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