Sofema Aviation Services (SAS) www.sassofia.com considers the role purpose and relationship between Operational Suitability Data (OSD) and the Master Minimum Equipment List (MMEL). Transition from JAA/EASA MMEL/OEB With the entry into force of Commission Regulation (EU) No 69/2014 on 18 February 2014 the concept of Operational Suitability Data (OSD) was implemented, integrating operational evaluation elements into the…

Sofema Aviation Services (SAS) www.sassofia.com reviews the guidance material – Ref GM 21.A.91 EASA Classification of changes to a type-certificate (TC) (ED Decision 2019/018/R). Introduction – Complementary guidance for classification of changes. A change to the TC is judged to have an ‘appreciable effect on the mass, balance, structural strength, reliability, operational characteristics, noise, fuel…

Sofema Aviation Services (SAS) www.sassofia.com looks at the compliance obligations related to the requirements of Certification Specification – Maintenance Certifying Staff Data CS-MCSD CS-MCSD is applicable to Group 1 aircraft as defined in point 66.A.5 of Part-66, in respect of which EASA establishes and notifies to the applicant the operational suitability data (OSD) certification basis in accordance with Part 21. CS MCSD.430 Maintenance areas of special emphasis (MASE) Maintenance areas of special emphasis (MASE)…

Sofema Aviation Services (SAS) www.sassofia.com considers the Operational Suitability Data (OSD) changes which will be introduced following the issue of Certification Specifications for Maintenance Certifying Staff Data ‘CS-MCSD — Issue 1 Introduction The objective of Decision 2020/019/R is to improve the level of safety by requiring the applicant for a type certificate (TC) or a restricted…