26 Feb 2009 Agency Decision Category Rulemaking activities DownloadsRead More Certification Specifications, Including Airworthiness Code and Acceptable Means of Compliance for Hot Air Balloons. Downloads [pdf] ED Decision 2009/005/R [pdf] CS-31HB/Initial Issue [pdf] CS-31HB/Initial Issue - Explanatory Note Read More Amended by decisions(s) ED Decision 2011/013/R Related Certification Specification(s) CS-31HB Initial issue