4.

Manufacturers shall ensure that procedures are in place for series production to remain in conformity with this Regulation. Changes in subsystem or safety component design or characteristics and changes in the harmonised standards or in other technical specifications by reference to which the conformity of the subsystem or the safety component is declared shall be adequately taken into account. When deemed appropriate with regard to the risks presented by a subsystem or a safety component, manufacturers shall, to protect the health and safety of passengers, operating personnel and third parties, carry out sample testing of subsystems or safety components made available on the market, investigate, and, if necessary, keep a register of complaints, of non-conforming subsystems and safety components and recalls of such subsystems and safety components, and shall keep distributors informed of any such monitoring.

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Source: EUR-Lex (Cellar) · retrieved 2026-11-05 · Text as adopted (Official Journal); later amendments are not incorporated in this text.