23 Nov 2007 Official Publication Amendment 1 Certification Specifications group CS-27 Small Rotorcraft Read MoreRelated Content Read More CS file [pdf] CS-27 / Amendment 1 Related ED Decision ED Decision 2007/013/R Explanatory Note [pdf] CS-27/Amendment 1 - Explanatory Note Change Information [pdf] CS-27/Amendment 1 - Change Information Related Content [pdf] Easy Access Rules for Small Rotorcraft (CS-27) (Amendment 1)