Cedar Rapids, Iowa – May 12, 2022 – ITC Midwest will be conducting aerial patrols of high-voltage transmission structures and lines throughout its service territory from approximately May 16 – 27, weather permitting. Helicopter patrols provide an overall status of the overhead transmission system owned and operated by ITC Midwest.
The flights take place across the following areas of the ITC Midwest service territory:
South zone
The flights will be conducted in the Beacon, Burlington, Cedar Rapids, Clinton, DeWitt, Eddyville, Fort Madison, Iowa City, Keokuk, Marion, Ottumwa and Palo areas in Iowa. In addition, the aerial patrols will take place around the community of Wayland, Missouri. Iowa counties in the aerial patrol areas include Appanoose, Cedar, Clinton, Davis, Des Moines, Dubuque, Jackson, Jasper, Jefferson, Johnson, Jones, Henry, Lee, Linn, Lucas, Mahaska, Monroe, Poweshiek and Wapello. The flights will also be conducted in Carroll and Whiteside counties in Illinois, and Clark County, Missouri.
Central zone
The flights will be conducted in the Ames, Ankeny, Boone, Dysart, Gladbrook, Iowa Falls, Marengo, Marshalltown, Newton, Perry and Vinton areas. Iowa counties in the aerial patrol areas include Adair, Cass, Benton, Boone, Dallas, Franklin, Greene, Grundy, Guthrie, Hardin, Iowa, Jasper, Louisa, Marshall, Polk, Story and Tama.
North zone
The flights will be conducted in the Asbury, Dubuque, Independence, Key West, Lansing and Mason City areas in Iowa, as well as around Galena, Illinois. In addition, aerial patrols will be flown around the Minnesota communities of Adams, Fairmont, Glenville, Harmony, Hayward, Jackson, Luverne, Sherburn and Winnebago. Iowa counties in the aerial patrol areas include Allamakee, Black Hawk, Bremer, Buchanan, Cerro Gordo, Chickasaw, Clayton, Delaware, Dickinson, Dubuque, Fayette, Franklin, Hancock, Howard, Jackson, Kossuth, Mitchell, Osceola, Winnebago and Worth. In addition, aerial patrols will be flown in Faribault, Fillmore, Freeborn, Jackson, Martin, Mower, Nobles and Rock counties in Minnesota, and Jo Davies County in Illinois.
These patrols are a North American Electrical Reliability Corporation (NERC) requirement for ITC Midwest’s vegetation management program, support proactive maintenance objectives, and align with the company’s model for operational excellence. They include inspections of steel structures, wood poles, conductors (wires), insulators and other equipment. Crews check for damaged or worn equipment and vegetation hazards.
The inspection flights are often conducted at low altitudes to allow accurate visual inspection of equipment for lightning damage, wear or other potential problems. This is normal procedure, so there is no cause for alarm if a low-flying helicopter is sighted near transmission lines during the time frame listed above.
