What is the Emergency Route Abort Altitude (ERAA) intended for?

The Emergency Route Abort Altitude (ERAA) is designed to provide pilots with a safe minimum altitude for the entire duration of the flight route. This altitude ensures that, in the event of an emergency requiring an immediate change in flight path, the aircraft has a designated altitude that clears all obstacles along the planned route. This consideration is particularly important for maintaining safety as it accounts for various terrain and obstacles that the aircraft may encounter.

By specifying that the ERAA applies to the entire route, it emphasizes the importance of having a consistent and reliable altitude throughout the flight. This helps pilots make informed decisions if they need to abandon their planned trajectory quickly, ensuring they can do so without running into hidden dangers.

The focus on the entirety of the route also allows for better planning and prevents any last-minute altitude adjustments that could lead to increased risks during an emergency situation.