During weather reroutes, what type of entries must be made?

• A. EDST route entries
• B. EDRT route entries
• C. EDST is optional
• D. No route entries

Answer: (A)

During weather reroutes, EDST route entries are used to record the altered path. This type of entry ensures the updated route is reflected in the flight plan, sector displays, and the system’s conflict detection and sequencing functions. Logging EDST route entries makes the revised track visible to controllers and automation, helping maintain safe separation and proper handoffs despite the weather change. Omitting entries or using a different entry type would leave the reroute undocumented in the flight data, which can lead to confusion and potential conflicts. So, EDST route entries are the correct action because they specifically capture and propagate weather-induced routing changes.