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NPA 2020-11

Regular update of CS-25
Submit your comments via CRT

The objective of this Notice of Proposed Amendment (NPA) is to reflect the state of the art of large aeroplane certification and improve the harmonisation of CS-25 with the Federal Aviation Administration (FAA) regulations. To that end, this NPA proposes amendments to CS-25 following the selection of non-complex, non controversial, and mature subjects. 

In particular, this NPA proposes amendments in the following areas: 

Item 1: AMC 25 Subpart H: corrections of references in the correlation table; 
Item 2: Turbo-propeller vibrations;
Item 3: Fabrication methods;
Item 4: Windshield – Failure conditions with structural effects;
Item 5: Cabin safety – references to FAA AC 25-17A ‘Transport Airplane Cabin Interiors Crashworthiness Handbook’.

The proposed amendments are expected to provide a moderate safety benefit, would have no social or environmental impacts, and would provide some economic benefits by streamlining the certification process.