Article 4 6.

the head of the safety investigation authority and/or, in the case of a multimodal authority, the head of its aviation branch shall have the experience and competence in civil aviation safety to fulfil his or her tasks in accordance with this Regulation and national law;

the investigators shall be afforded status giving them the necessary guarantees of independence;

the safety investigation authority shall comprise at least one available investigator able to perform the function of the investigator-in-charge in the event of a major air accident;

the safety investigation authority shall be allocated a budget that enables it to carry out its functions;

the safety investigation authority shall have at its disposal, either directly or by means of the cooperation referred to in Article 6, or through arrangements with other national authorities or entities, qualified personnel and adequate facilities, including offices and hangars to enable the storage and examination of the aircraft, its contents and its wreckage.