Government, aviation industry officials try to address safety issues after year of calamities

Officials from dozens of countries meet in Montreal this week to try to find consensus on how to keep from losing airliners like the one that vanished without a trace in Asia and another shot down in Eastern Europe.

It's only the second high-level safety conference in the 70-year history of the International Civil Aviation Organization, a U.N. agency.

But remember, last year was a calamitous one.

A Malaysia Airlines flight disappeared in March and hasn't been found. In July, another Malaysia Airlines flight was down shot down over Ukraine.

One proposal is having the agency build a database where governments can send intelligence or warnings about risks to aircraft over conflict zones.

There's agreement that tracking planes needs to get better, but no certainty on how to do that.