How frequently are Terminal High/Low Approach Plates published?

Terminal High/Low Approach Plates are typically published every 56 days, which is equivalent to 8 weeks. This schedule ensures that the information contained within the plates is regularly updated to reflect the most current airport data, navigation aids, and procedures that pilots need for safe operations.

This frequent update cycle takes into account changes such as construction at airports, adjustments to flight paths, and navigation system updates, providing pilots with reliable and current information necessary for their flight operations. Through consistent updates, the integrity and safety of air traffic operations are maintained.