US Department of Transportation
Federal Aviation Administration
800 Independence Avenue, SW
Washington, DC 20591
(866) TELL-FAA | (866) 835-5322
version 2.beta.063025
CSSEM is used to assess the supportability of 1030 MHz and 1090 MHz certifications and frequency assignments by evaluating the impact of the request on the existing and future 1030 MHz and 1090 MHz environment and cooperative surveillance system performance.
Access to this website is limited to entities that have a requirement to conduct radio frequency coordination with the FAA. This may include US Government agencies, military services, and industry equipment suppliers. Users must register with CSSEM before access is granted. To establish an account, please submit a request by accessing the “Register” link.
Evaluation with CSSEM does not replace WebFCR coordination. Please contact FAA Spectrum Engineering if you have any questions or need assistance.
You are accessing a U.S. Government authorized information system, which includes (1) this computer, (2) this computer network, (3) all computers connected to this network, (4) all devices and storage media attached to this network or to a computer on this network, and (5) all cloud servers and hosting environments supporting this information system. This information system is provided for U.S. Government-authorized use only.
Unauthorized or improper use of this system may result in disciplinary action, as well as civil and criminal penalties.
By logging in and using this information system, you understand and consent to the following:
This is an UNCLASSIFIED system. Under no circumstances shall classified information be entered and/or uploaded.
US Department of Transportation
Federal Aviation Administration
800 Independence Avenue, SW
Washington, DC 20591
(866) TELL-FAA | (866) 835-5322