Special use airspace

Military operations areas | Restricted areas

• Special use airspace

Military operations areas

• Lights out operation

Obtaining the most current information is the pilot's responsibility. Be sure to check with GRB AFSS for any changes.

Area	Effective altitudes	Days/Times used	Controlling agency activity information
Falls 1	500 AGL to, but not including, 18,000	Intermittent Tue-Sat 0800-1600 Other times by NOTAM	MSP Center 128.6 GRB AFSS 122.5 Volk Apch 135.25 Volk Tower 127.5
Falls 2	500 AGL to, but not including, 18,000	Intermittent Tue-Sat 0800-1600 Other times by NOTAM	MSP Center 128.6 GRB AFSS 122.5 Volk Apch 135.25 Volk Tower 127.5
Volk West	100 AGL to, but not including, 18,000	Intermittent Tue-Sat 0800-1600 Other times by NOTAM	MSP Center 128.6 GRB AFSS 122.5 Volk Apch 135.25 Volk Tower 127.5
Volk South	500 AGL to, but not including, 18,000	Intermittent Tue-Sat 0800-1600 Other times by NOTAM	CHI Center 125.5 GRB AFSS 122.35 Volk Apch 135.25 Volk Tower 127.5
Volk East	8,000 to, but not including, 18,000	Intermittent Tue-Sat 0800-1600 Other times by NOTAM	CHI Center 125.5 GRB AFSS 122.45 Volk Apch 135.25 Volk Tower 127.5
Minnow	10,000 to, but not including, 18,000	Intermittent Other times by NOTAM (normally daylight hours)	MSP Center 125.55 CHI Center 125.1 GRB AFSS 122.4

Note: Altitudes are MSL and in feet unless otherwise indicated. Time shown is local.

For further information, monitor 134.35 or contact Volk Approach 135.25 or contact Volk ANGB Airspace Scheduling Office at (1-800)972-8673.

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Restricted areas

Area/location	Altitude	Time	Controlling agency activity information
R-6901 A Fort McCoy Fort McCoy Range	to 20,000	1May-30 Sep - Continuous 1Oct-30Apr - 0800-2200	MSP Center 128.6 McCoy Tower 124.6 GRB AFSS 122.5
R-6901 B Fort McCoy Fort McCoy Range	to 20,000	By NOTAM	MSP Center 128.6 McCoy Tower 124.6 GRB AFSS 122.5
R-6903 Sheboygan Sheboygan Range	to FL 450	Intermittent by NOTAM	CHI Center 125.5 Volk Apch 135.25 Volk Tower 127.5 GRB AFSS 122.4
R-6904A Volk Field Hardwood Range	150 AGL to 17,000	Tue-Sat 0800-1600 Other times by NOTAM	MSP Center 128.6 Volk Apch 135.25 Volk Tower 127.5 GRB AFSS 122.2
R-6904B Volk Field Hardwood Range	to 17,000	Tue-Sat 0800-1600 Other times by NOTAM	MSP Center 128.6 Volk Apch 135.25 Volk Tower 127.5 GRB AFSS 122.2

Note: Altitudes are MSL and in feet unless otherwise indicated. Time shown is local. No person shall operate an aircraft within a Restricted Area between the designated altitudes during the time of designation unless prior permission has been issued.

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