RNAV SIDS and STARs

The RNAV SIDs and STARs have been around for a few years with more popping up every day. In fact, theyve become such an integral part of the ATC system that you hardly see any new SIDs or STARs that arent RNAV. Although weve published a few articles that cover certain aspects of these procedures, we still get a lot of questions about them. Its time for a thorough analysis of these procedures.

Key Takeaways:

• RNAV SIDs and STARs are modern instrument procedures utilizing area navigation (e.g., GPS) with explicit altitude and speed restrictions designed to reduce ATC workload and enhance airspace efficiency, especially in congested terminal areas.
• These procedures streamline air traffic by allowing pilots to "climb/descend via" a procedure, significantly reducing the need for individual ATC instructions and radio congestion.
• Pilots must meticulously brief RNAV SIDs/STARs, paying close attention to general notes for initial speed/altitude restrictions and understanding that compliance with restrictions continues until explicitly modified or relaxed.
• Despite the automation, pilots must remain vigilant as controllers may still issue vectors, speed, or altitude changes for spacing, requiring careful adherence to instructions and a thorough understanding of the procedure.

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