17.—(1) The Authority shall elect a chairman, and may elect a vice-chairman, from among its members.
(2) The chairman and, if a vice-chairman is elected, the vice-chairman, shall, subject to paragraphs 13 to 16, hold office for a period of one year from the date of their election.
(3) Sub-paragraph (2) shall not prevent a person who holds or has held office as chairman or vice-chairman, as the case may be, from being elected or re-elected to either of those offices.
(4) On a casual vacancy occurring in the office of chairman or, if a vice-chairman has been elected, the vice-chairman, the Authority shall elect from its members a person to replace the chairman, and may so elect a person to replace the vice-chairman, as the case may be.
(5) The election to replace the chairman under sub-paragraph (4) shall take place not later than the next following ordinary meeting of the Authority.