Article 4
Every accident or serious incident shall be the subject of an investigation. However, Member States may take measures to enable incidents not covered by the first subparagraph to be investigated when the investigating body may expect to draw air safety lessons from it. The extent of investigations and the procedure to be followed in carrying out such investigations shall be determined by the investigating body, taking into account the principles and the objective of this Directive and depending on the lessons it expects to draw from the accident or serious incident for the improvement of safety. The investigations referred to in paragraph 1 shall in no case be concerned with apportioning blame or liability.
← art_3__point_l__text_1 · All articles · 1. →
Source: EUR-Lex (Cellar) · retrieved 2026-11-10 · Text as adopted (Official Journal); later amendments are not incorporated in this text.