Which frequency is monitored by most Flight Service Stations (FSS)?

Most Flight Service Stations (FSS) typically monitor the frequency of 122.2 MHz. This frequency is specifically designated for the purpose of Common Traffic Advisory Frequency (CTAF) at many airports and is widely used for non-towered airport communications. FSS utilizes this frequency to support pilots in various operational capacities, including providing weather information, flight planning assistance, and advisory services.

While other frequencies mentioned, such as 121.5 MHz, are used for emergency communications and 122.0 MHz is often utilized at some airports for CTAF as well, 122.2 MHz remains the most common frequency monitored by FSS across the board, especially in areas with multiple non-towered airports nearby. Thus, residents of the aviation community can rely on this frequency for up-to-date information and safety advisories.