The International Airports Authority Act 1971
29. Protection of action taken under the Act
No suit, prosecution or other legal proceeding shall lie against the Authority or any member or any officer or other employee of the Authority for anything which is ingood faith done or intended to be done in pursuance of this Act or of any rule or regulation made thereunder or for any damage sustained by any aircraft or vehicle in consequence of any defect in any of the airports or other things belonging to or under the control of the Authority.