9.—(1) For the purposes of carrying out safety investigations, the Secretary of State must appoint persons to work for the Air Accidents Investigation Branch as Inspectors of Air Accidents.
(2) The Secretary of State must appoint one such Inspector as the Chief Inspector of Air Accidents.
(3) The Chief Inspector must appoint another such Inspector as the Deputy Chief Inspector of Air Accidents.
(4) Any of the Chief Inspector’s powers and obligations under these Regulations may be exercised or discharged by the Deputy Chief Inspector where the Chief Inspector so directs.
(5) Where a safety investigation is required or permitted by Regulation 996/2010, Annex 13 or by these Regulations, the investigator-in-charge is the Chief Inspector or any other Inspector selected by the Chief Inspector for that purpose.
(6) The Chief Inspector may determine that the investigator-in-charge shall be assisted by one or more Inspectors.