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NPA 2022-07

Regular update of CS-25

The objective of this Notice of Proposed Amendment (NPA) is to reflect the state of the art of large aeroplane certification based on experience gathered from in-service occurrences and certification projects.

This NPA proposes to amend CS-25 (certification specifications and acceptable means of compliance for large aeroplanes) in the following areas:

Item 1: Ditching survivability
Item 2: AMC 25.1309 System design and analysis – Development assurance and AMC 20 references
Item 3: Installed systems and equipment for use by the flight crew
Item 4: Performance and handling characteristics in icing conditions
Item 5: Brakes and braking systems certification tests and analysis
Item 6: Oxygen equipment and supply
Item 7: Air conditioning ‘off’ – maximum time period
Item 8: Cabin crew portable oxygen equipment

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