What action should you take when you reach FLOSI while traveling northbound on V213?

When you reach FLOSI while traveling northbound on V213, the appropriate action is to communicate with Air Traffic Control (ATC) by stating that you have reached the FLOSI fix. This action is essential for maintaining situational awareness and keeping ATC informed of your position along your route. Reporting your position helps ATC ensure safe separation from other aircraft and allows for accurate tracking of your flight.

It's important for pilots to report established on a point or fix, as this information assists ATC in managing traffic effectively and providing necessary instructions for approach and landing. By stating your position, you are actively participating in the communication process that keeps both the pilot and ATC aligned on the current flight situation.

The other actions may not be specifically required upon reaching this fix. For example, contacting ATC using the onboard intercom is not standard procedure; instead, the aircraft's radio should be used. Switching to approach frequency typically occurs at a later stage of the flight when nearing the destination airport, rather than immediately upon reaching a waypoint. Activating the transponder is a general requirement for operating in controlled airspace, but it is not a specific action related to reaching FLOSI.

Overall, stating to ATC that you have reached FLOSI is