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Sofema Aviation Services (SAS) ww.sassofia.com considers the requirements to ensure compliance with CS 25.1309 Note: The applicant should obtain early concurrence of the certification authority on the choice of an acceptable means of compliance. Introduction: Compliance with CS 25.1309(a) Equipment covered by CS 25.1309(a)(1) must be shown to function properly when installed. o The aeroplane operating…

Sofema Aviation Services (SAS) www.sassofia.com considers the terminology and descriptors used in support of CS25-1309 analysis in the EASA Failure Condition Classifications and Probability Terms Introduction – Classifications Failure conditions may be classified according to the severity of their effects as follows: No safety effect: Failure conditions that would have no effect on safety. o For…

Sofema Aviation Services (SAS) www.sassofia.com takes a deep dive into the subject to understand the merits of an Effective Safety Survey process and the benefits for the organisation. Introduction EASA does not mandate a standard for an effective safety survey, this is left to the discretion of the organisation to develop. Unfortunately, this creates a challenge…

Sofema Aviation Services (SAS) www.sassofia.com considers the different composite materials and their applications in aviation. Introduction  Composite materials are multi-component materials made from two or more different constituents that when combined, produce a material with properties different from and superior to those of the individual components.  The individual components maintain their physical identities in the…