In order to maintain a high level of aviation safety and environmental requirements in Europe it might therefore be necessary to mandate the compliance of aircraft with additional airworthiness requirements which were not mandated by the Agency at the time of certification of design, because they were not included in the relevant CS at that time. This amendment to Regulation (EU) 2015/640 concerns three evolutions of the CS.

First, in 1989 the Joint Aviation Authorities (JAA) introduced new design standards for the dynamic conditions of passenger and cabin crew seats of large aeroplanes, offering an improved protection of occupants. Those standards aimed at mitigating the risk of injuries or deaths in the event of emergency landing. They were transposed in the Agency's certification specifications for large aeroplanes (CS-25), but they apply only to large aeroplanes of which the certification of the design has been applied for after 1989. Considering that certain large aeroplanes might not comply with those standards, additional airworthiness specifications should be therefore introduced. Having due regard to the nature and risk of operations with large aeroplanes while maintaining a high uniform level of civil aviation safety in the Union, it is considered proportionate and cost-efficient to introduce those additional airworthiness specifications only to large aeroplanes newly produced on the basis of a design which has already been certified by the Agency. Those additional airworthiness specifications should not apply to flight deck crew seats and seats in low-occupancy aeroplanes involved in on-demand non-scheduled commercial air transport operations because it is not considered proportionate or cost-efficient.

Second, in 2009 the Agency introduced new flammability standards for thermal or acoustic insulation materials improving certain characteristics of the insulation materials installed in the fuselage to resist flame propagation and flame penetration in the certification specifications for large aeroplanes (CS-25 Amendment 6). Those new flammability standards apply only to large aeroplanes of which the certification of the design has been applied for after 2009. Considering that certain large aeroplanes might not comply with those standards, additional airworthiness specifications should be introduced. Having due regard to the nature and risk of operations with large aeroplanes while maintaining a high uniform level of civil aviation safety in the Union, it is considered proportionate and cost-efficient to introduce the additional airworthiness specifications addressing the risk of flame propagation in flight to large aeroplanes newly produced on the basis of a design which has already been certified by the Agency. Those additional airworthiness specifications should also apply to large aeroplanes which are in service when thermal or acoustic insulation materials are replaced. Finally, the additional airworthiness specifications addressing the risk of flame penetration into the aeroplane after an accident should be introduced for large aeroplanes with a passenger capacity of 20 or more and apply only to aeroplanes newly produced on the basis of a design which has already been certified by the Agency.

Third, to gradually mitigate the environmental impact of halon used in the firefighting equipment, the International Civil Aviation Organization (ICAO) has issued new standards by amending ICAO Annex 6 applicable as from 15 December 2011. In order to comply with those standards, additional airworthiness specifications should be introduced to newly produced large aeroplanes and large helicopters the design of which has already been certified by the Agency on the basis of certification specifications which allowed the use of halon as a suitable agent.

Commission Regulation (EU) 2015/640 should therefore be amended accordingly.

The measures provided for in this Regulation are based on opinions issued by the Agency in accordance with Article 76(1) of Regulation (EU) 2018/1139.

The measures provided for in this Regulation are in accordance with the opinion of the Committee established by Article 127(3) of Regulation (EU) 2018/1139,