Changes made by Commission Decision of 26 September 2011 on benchmarks to allocate greenhouse gas emission allowances free of charge to aircraft operators pursuant to Article 3e of Directive 2003/87/EC of the European Parliament and of the Council (2011/638/EU)
EU Decision 2011/638
No changes made by Commission Decision of 26 September 2011 on benchmarks to allocate greenhouse gas emission allowances free of charge to aircraft operators pursuant to Article 3e of Directive 2003/87/EC of the European Parliament and of the Council (2011/638/EU) are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.