This NPA proposes the update of the Certification Specifications for Master Minimum Equipment List (CS-MMEL) and of the Certification Specifications for Generic Master Minimum Equipment List (CS-GEN-MMEL) considering the principles of harmonisation and possible relief of items under special operating conditions, limitations or procedures for a specific aeroplane type or model. The objectives are summarised below:
— Introduction of items covered by Federal Aviation Administration (FAA) Policy Letters that are not yet included in CS-MMEL/CS-GEN-MMEL, such as cabin/galley storage
— Harmonisation of the airborne collision avoidance system (ACAS) rectification interval in accordance with the related FAA Policy Letter and in line with the recommendation of the EASA working group in the field;
— Alignment with the FAA MMEL Policy Letter for relief of items following its latest update in the field of long-range communications.
The proposed regulatory material is expected to facilitate the applicants’ compliance with the operational suitability data (OSD) requirements for MMEL and increase efficiency by rendering the evaluation process of applications more comprehensible. Overall, the proposed changes are expected to have a moderate safety benefit and no social or environmental impact, while some economic benefits are expected by streamlining the certification process.
