Originally Posted by
CIT85
Fuel load. ZRH-ORD would have a significant fuel load at take off. Flight cannot dump fuel over land. If safety is not an immediate concern, then fly to Atlantic and dump some fuel before returning to land.
We can dump fuel over land, and if high enough, it evaporates into the air. That said, we prefer to do so over water or under populated areas to avoid any possible environmental issues.