Document ID: chunk:federal_register_of_legislation:F2024C01027:reg:15:p111
Version: federal_register_of_legislation:F2024C01027
Segment Type: reg
Provision Reference: reg 15 (pt 111/182)
Character Range: 430815–433801

CASA written notice of the determination.
 (4) CASA must:
 (a) decide whether or not CASA agrees with the determination; and
 (b) give the authorised person or approved design organisation written notice of its decision.
 (5) If CASA agrees with the determination, the authorised person or approved design organisation must give the applicant written notice of the determination and of CASA's agreement with the determination.

21.420  Applicants must show compliance with applicable airworthiness standards, submit technical data and provide documents
 (1) The applicant must:
 (a) show CASA or the authorised person or approved design organisation that the design complies with the applicable airworthiness standards for the design; and
 (b) give all of the technical data for the design to CASA or the authorised person or approved design organisation for approval under regulation 21.009; and
 (c) give CASA or the authorised person or approved design organisation a copy of any instructions for continued airworthiness in respect of the design that are necessary to ensure that the modified aircraft, aircraft engine, propeller or appliance remains safe throughout its lifetime.
 (2) If the design is for a modification of, or repair to, an aircraft and relates to a matter that is dealt with in the flight manual for the aircraft, the applicant must also give CASA or the authorised person or approved design organisation a copy of the operating instructions and limitations in respect of the design, in the form of:
 (a) an amendment to the flight manual; or
 (b) a flight manual supplement.
 (3) For paragraph (1)(a), an applicant is taken to have shown CASA that a design complies with the applicable airworthiness requirements for the design if an approved design organisation gives CASA a certificate under subregulation (5).
 (4) Subregulation (5) applies if, under regulation 21.251, CASA authorises a relevant approved design organisation to determine whether the design complies with the applicable airworthiness requirements.
 (5) If the approved design organisation is satisfied that the design complies with the applicable airworthiness requirements, the organisation may give CASA a certificate to that effect.

21.425  Applicants to carry out necessary inspections and tests
 (1) For paragraph 21.420(1)(a), the applicant must carry out all inspections and tests necessary to show that the design complies with the applicable airworthiness standards for the design.
 (2) Before testing a prototype of a modification or repair, the applicant must:
 (a) establish the following for the prototype:
 (i) that the materials and processes used to produce the prototype conform to the specifications for the design;
 (ii) that all aeronautical products used in the prototype conform to the drawings in the design;
 (iii) that the manufacturing processes, construction and assembly of the prototype conform to the manufacturing processes, construction and assembly specified