(1) Subject to sub-regulation (2), a person shall not fly or operate an aircraft in or over Saint Lucia unless there is in force in respect thereof a certificate of airworthiness duly issued or rendered valid in under the law of the State in which the aircraft is registered, and any conditions subject to which the certificate was issued or rendered valid are complied with.
(2) Subregulation (1) shall not apply to flights of the following aircraft, beginning and ending in Saint Lucia without passing over any other State—
(a) an aircraft flying in accordance with a special airworthiness certificate issued pursuant to Part 5 of the Schedule; or
(b) an aircraft flying in accordance with the conditions of a permit to fly issued by the Authority in respect of that aircraft.
(3) In the case of an aircraft registered in Saint Lucia the certificate of airworthiness referred to in subregulation (1) shall be acertificate of airworthiness issued in accordance with the provisions of these Regulations including Part 5 of the Schedule.
(4) The Authority shall issue in respect of any aircraft a certificate of airworthiness if the Authority is satisfied that the aircraft is fit to fly having regard to—
(a) the design, construction, workmanship and materials of the aircraft (including in particular any engines fitted therein), and of any equipment carried in the aircraft which the Authority considers necessary for the airworthiness of the aircraft; and
(b) subject to subregulation (4) the results of flying trials, and such other tests of the aircraft as the authority may require.
(5) If the Authority has issued a certificate of airworthiness in respect of an aircraft which, in the Authority's opinion, is a prototype aircraft or a modification of a prototype aircraft, the Authority may dispense with flying trials in the case of any other aircraft if the Authority is satisfied that it conforms to such prototype or modification.
(6) A certificate of airworthiness shall specify such conditions as are, in the opinion of the Authority, appropriate to the aircraft in accordance with Part 5 of the Schedule and the certificate shall be issued subject to the condition that the aircraft shall be flown only for the purposes indicated on that certificate or associated certificates.
(7) The Authority may issue a certificate of airworthiness subject to such other conditions relating to the airworthiness of the aircraft as the Authority thinks fit.
(8) A certificate of airworthiness may designate the performance group of the aircraft.
(9) The Authority may, subject to such conditions as the Authority thinks fit, issue a certificate of validation rendering valid for the purposes of these Regulations a certificate of airworthiness issued in respect of any aircraft under the law of any State other than Saint Lucia.
(10) Subject to the provisions of these Regulations, a certificate of airworthiness or validation issued under this Regulation shall remain in force for such period as may be specified on the certificate, but may be reviewed by the Authority from time to time to determine that the aircraft conforms to the applicable airworthiness requirements.
(11) A certificate of airworthiness or a certificate of validation issued in respect of an aircraft shall cease to be in force—
(a) if the aircraft, or such of its equipment as is necessary for the airworthiness of the aircraft, is overhauled, repaired or modified, or if any part of the aircraft or of such equipment is removed or is replaced, otherwise than in a manner and with material of a type approved by the Authority either generally or in relation to a class of aircraft or to the particular aircraft;
(b) until the completion of any inspection of the aircraft or of any such equipment as aforesaid, being an inspection made for the purpose of ascertaining whether the aircraft remains airworthy and—
(i) classified as mandatory by the Authority, or
(ii) required by a maintenance program approved by the Authority in relation to that aircraft; or
(c) until the completion to the satisfaction of the Authority of any modification of the aircraft or of any such equipment as aforesaid, being a modification required by the Authority for the purpose of ensuring that the aircraft remains airworthy.
(12) Nothing in these Regulations shall oblige the Authority to accept an application for the issue of a certificate of airworthiness or validation or for the variation or renewal of any such certificate when the application is not supported by such reports from such approved persons as the Authority may specify, either generally or in a particular case or class of cases.