Oklahoma Administrative Code
Title 25 - Oklahoma Department of Aerospace and Aeronautics
Chapter 1 - Department Operations
Section 25:1-1-8 - Windsock program

In order to ensure that a functional wind indicator is present and visible at each airport, open to the public, within the State of Oklahoma, replacement wind socks shall be made available, upon request and proof of need, free of cost to the airport. Airports which are not open to the public shall be provided a wind sock upon request for a fee equal to the cost of the item to the Oklahoma Department of Aerospace and Aeronautics. To ensure that a functional wind indicator is present and visible at designated emergency management use landing sites, within the State of Oklahoma, wind socks shall be made available, upon request and proof of need, free of cost to the emergency management use landing site.