Montreal Protocol
noun
1Each of four protocols signed in Montreal in 1975 concerning the presumed liability of an international air carrier in the event of death or injury to a passenger or delay, damage to, or loss of cargo or baggage.
2An international agreement signed in Montreal in September 1987, which prescribed regulations restricting the production and use of substances damaging to the stratospheric ozone layer.
Origin
1970s; earliest use found in ICAO Bulletin.