UN aviation experts contemplate tougher emissions standards for aircraft

The meeting comes as ICAO is seeking broad agreement this fall on a long-term climate goal amid differences between Europe and China and growing pressure for aviation to curb emissions

UN aviation experts are again discussing toughening emissions standards for commercial aircraft, less than six years before a previously agreed clampdown takes effect.

Support for a new emissions standard could put pressure on planemakers, which need years to adapt to rule changes due to long production cycles, to cease producing their least efficient models, two sources familiar with the talks said.

Experts from the United States and some European countries backed tougher emissions standards during a virtual gathering of the International Civil Aviation Organization (ICAO) group this week, according to working papers and sources.

One of the sources said ICAO's Committee on Aviation