Ethiopian Airlines said on Wednesday it would send the black boxes from its crashed Boeing 737 MAX abroad, while a Norwegian airline sought compensation from the US planemaker after two thirds of that model were grounded globally. Sunday’s still unexplained crash of the passenger jet, just after take-off from Addis Ababa en route to Nairobi, killed 157 people and followed another disaster involving a 737 MAX in Indonesia five months ago that killed 189 people.