Article 12 1.

When a judicial investigation is also instituted, the investigator-in-charge shall be notified thereof. In such a case, the investigator-in-charge shall ensure traceability and retain custody of flight recorders and any physical evidence. The judicial authority may appoint an official from that authority to accompany the flight recorders or physical evidence to the place of the read-out or treatment. Where examination or analysis of such physical evidence may modify, alter or destroy it, prior agreement from the judicial authorities will be required, without prejudice to national law. Where such agreement is not obtained according to the advance arrangements referred to in paragraph 3 within a reasonable time and not later than 2 weeks following the request, it shall not prevent the investigator-in-charge from conducting the examination or analysis. Where the judicial authority is entitled to seize any evidence, the investigator-in-charge shall have immediate and unlimited access to and use of such evidence.