What is the recommended procedure for transitioning from VFR to IFR on a composite flight plan?

The recommended procedure for transitioning from VFR (Visual Flight Rules) to IFR (Instrument Flight Rules) on a composite flight plan involves contacting the nearest Flight Service Station (FSS) to close the VFR portion of your flight. This action is essential because it informs the appropriate authorities that you are now operating under IFR, which helps in maintaining accurate traffic control and situational awareness for both yourself and ATC. After closing the VFR portion, it is then appropriate to request your IFR clearance.

This process is designed to ensure that you have formally shifted your flight rules, which is crucial for safety and compliance with aviation regulations. This procedure also allows for any necessary updates to your flight plan to be coordinated with ATC, ensuring a smooth transition into a controlled IFR environment.