(1) A lawful entry into the Republic or a lawful transit across the Republic, with or without landing, of an aircraft to which this section applies shall not entail

(a) a seizure or detention of the aircraft, or

(b) proceedings being brought against the owner or operator of the aircraft, or

(c) any other interference by or on behalf of a person in the Republic, on the ground that the construction, mechanism, parts, accessories of or operation of the aircraft is or are an infringement of a patent, design of model.

(2) Subject to subsection (3), the importation into, and storage in, the Republic of spare parts and spare equipment for an aircraft to which this section applies, and the use and installation of those parts or equipment in the repair of that aircraft shall not entail

(a) a seizure or detention of the aircraft or of the spare parts or spare equipment, or

(b) proceedings being brought against the owner or operator of the aircraft or the owner of the spare parts or spare equipment, or

(c) an interference with the aircraft by or on behalf of a person in the Republic, on the ground that the spare parts or equipment or their installation are or is an infringement of a patent, design or model.

(3) Subsection (2) does not apply in relation to spare parts or spare equipment which are sold or distributed in the Republic or are exported from the Republic for sale or distribution.

(4) This section applies

(a) to aircraft, other than an aircraft used in military, customs or police services, registered in a country or territory in respect of which there is in force a declaration made by the President by executive instrument, with a view to the fulfilment of the provisions of the Chicago Convention to which this section relates, that the benefits of those provisions apply to that country or territory, and

(b) to any other aircraft as the President may by executive instrument specify.