(1) The Chief Investigator, Transport Safety by instrument may delegate any power, duty or function of the Chief Investigator, Transport Safety under this Act, the Marine Act 1988 , the Transport (Compliance and Miscellaneous) Act 1983 or any other Act or the regulations under any Act including, subject to subsection (3), this power of delegation, to—
(a) any employee employed under Part 3 of the Public Administration Act 2004 to enable the Chief Investigator, Transport Safety to carry out his or her functions; or
(b) a consultant, contractor or agent engaged by him or her.
(2) A delegation under this section may be made—
(a) in relation to a person or class of persons specified in the instrument of delegation; or
(b) in relation to the holder, or the holder from time to time, of an office specified, or of each office in a class of offices specified, in the instrument of delegation.
(3) A person to whom a power, duty or function has been delegated under subsection (1) may, subject to and in accordance with the instrument of delegation under subsection (1), by instrument delegate to another person that power, duty or function.
(4) Sections 42 and 42A of the Interpretation of Legislation Act 1984 apply to a sub-delegation under subsection (3) as if it were a delegation.