CNN New Day December 29, 2014 12:24:00
They design them. in many case, developing countries, where the pilots and the level of training may not be to the same high standard. that's the truth. no one will say that that's the issue. >> i understand these will be conversations we will be having in the coming days and weeks. i want to pull back to this exact scenario here sean why is it we don't know of a mayday call issued? we know it was four minutes after the plane was operated after they had increased altitude four minutes, there was nothing. why was there no mayday called? >> so considerations here. first of all, this is not uncom...