Escape routes are routes that can be used in the event of cabin decompression or engine failure to guide the aircraft to either a safe altitude or safe landing around obstacles (e.g., mountains) that would prevent such action. Escape routes are generated for every leg of a route that is in an area of MORA greater than FL100 (10,000 feet above sea level), providing a known path from a diversion waypoint to an area of sufficiently low MORA, and then to an emergency-suitable airport. NFP generates both Oxygen Escape Routes (for depressurization) and Method 2 Drift-down Escape Routes (for engine failure).
For information on how Escape Routes appear on the flight plan and how suitable airports are selected see Escape Routes Requirements.