BONN November 14, 2017. A new Report by Columbia Law School reveals serious flaws in the interpretation of transparency and public relations requirements by the United Nations Aviation Board (ICAO). The results of this report are in the middle of a closed-door meeting in Montreal, which encourages approval of the rules for ICAO`s new CO2 offset system. A separate analysis of the carbon market watch on the impact of the system on the Paris Agreement requires an urgent review of ICAO`s decision-making process, in line with country obligations and international practices. Resources: Columbia Law School / Sabin Center Working Paper: Transparency and ICAO`s Offsetting Scheme: Two Separate Concepts? Carbon Market Watch Policy Briefing: Visibility Unlimited: Transparency of the new carbon market for air transport Oh no, ICAO! Press release from the International Climate Action Network on the day the International Civil Aviation Organization (ICAO) received the award of the day at COP23: „A lack of public control has enabled ICAO to develop climate policy in isolation. The air traffic equalization system has serious and direct consequences for the Paris Agreement, and if the outstanding issues are to be resolved before CORSIA goes online, this clandestine practice must be put to an end.  See the Swedish government`s response here (in Swedish)  www.europarl.europa.eu/sides/getDoc.do?pubRef=2f%2fEP%2fEP%2fTEXT%2fTEXT%2bWQ%2bP-2017-00663 3%2b0%2bDOC %2bXML%2bV0%2f.2fEN-language  www.icao.int/Meetings/CORSIAHQ17/Documents/1-2_Introduction_CORSIA_Part%20II_V06_DATB.pdf, s.15  aviationbenefits.org/environmental-efficiency/our-climate-plan/offsetting-emissions-growth/countdown-to-corsia This week, the 36 member states of the UN International Aviation Agency (ICAO) Council meet in Montreal for closed talks, to discuss the rules for its CO2 offset system, known as CORSIA. The new carbon market, created in October 2016, aims to offset the sector`s emissions growth above its 2020 level. A new analysis by Carbon Market Watch warns of the need for a careful conception of the rules so as not to undermine the objectives of the Paris agreement. This letter follows a new report from Columbia Law School, which shows that if the governance structure and transparency of ICAO`s decision-making process are not significantly improved to allow for public control, the aviation system risks poor quality and illegality. The air transport system will have a direct impact on countries` compliance with the Paris climate targets. While discussions are under way in Bonn on accounting rules for emission reduction transfers between countries, it is unclear how airlines have booked emissions reductions to avoid even cuts in the double counting towards ICAO and the Paris targets. Long-term targets for carbon dioxide (CO2) emissions from global aviation and international aviation as a whole are envisaged under the Paris Agreement, which sets the goal of keeping the global average average temperature well above pre-industrial levels by 2100 and continuing efforts to limit this increase to 1.5 degrees Celsius.