Publication of Certification Memo, Special Conditions, Equivalent Safety Findings, Deviations


EASA Management Board decision 12/2007, dated 11 September 2007, Article 3 (2.) requires that Deviations (Dev) from the applicable airworthiness codes, environmental protection certification specifications and/or acceptable means of compliance with Part 21, as well as important Special Conditions (SC) and Equivalent Safety Findings (ESF) shall be subject to a public consultation of at least 3 weeks.

This Work Instruction provides a standardised format and instructions for issuing Certification Memoranda (CMs), for the management of internal consultation and public consultation of the CMs as well as of Special Conditions (SCs), Equivalent Safety Findings (ESFs), and Deviations (Devs).

This Work Instruction describes:

  • The purpose of CMs
  • EASA Certification Memoranda criteria
  • The CM categories
  • How to develop a CM, SC, ESF, DEV
  • The responsibilities of different actors in the drafting of CM, SC, ESF and Dev
  • Publication for consultation, archiving and
  • The CM format

This Work Instruction affects anyone who prepares, reviews, validates and approves CM, ESF, SC and Devs.

All chapters are applicable to Certification Memoranda (CM).