Page 147 - UK Regulation Part 21 Initial Airworthiness Annex I (consolidated) March 2022

PART 21 - INITIAL AIRWORTHINESS (ANNEX I)

a. To issue or, where applicable, supplement or amend the handbook in
accordance with 21.A.243, in particular to indicate the initiation of
design activities on a product.
b. To assure that all instructions of the Handbook are adhered to.
c. To conduct Type Investigation.
d. To nominate staff as ‘compliance verification engineers’ responsible to
approve compliance documents as defined in paragraph 3.1.3.
e. To nominate personnel belonging to the Office of Airworthiness
responsible as defined in paragraph 3.1.4.
f. In the case of an applicant for a supplemental type-certificate, to obtain
the agreement of the type-certificate holder for the proposed
supplemental type-certificate to the extent defined in 21.A.115.
g. To ensure full and complete liaison between the type design
organisation and related organisations having responsibility for products
manufactured to the type-certificate.
h. To provide the assurance to the CAA that prototype models and test
specimens adequately conform to the type design (see 21.A.33(b)(1)).
3.1.2 Chief Executive and Head of design organisation (or his or her Deputy)
a. The Chief Executive should provide the necessary resources for the
proper functioning of the design organisation.
b. The Head of the design organisation, or an authorised representative,
should sign a declaration of compliance (see 21.A.20(d) and 21.A.97(a)
(3)) with the applicable CS and environmental protection requirements
after verification of satisfactory completion of the Type Investigation. In
accordance with 21.A.20(e) and 21.A.97(a)(4), his or her signature on
the declaration of compliance confirms that the procedures as
specified in the handbook have been followed (see also GM
21.A.265(b)).
c. The functions of Chief Executive and Head of the design organisation
may be performed by the same person.
3.1.3 Compliance Verification
a. Approval by signing of all compliance documents, including test
programmes and data, necessary for the verification of compliance
with the applicable CS and environmental protection requirements as
defined in the certification programme.
b. Approval of the technical content (completeness, technical accuracy...),
including any subsequent revisions, of the manuals approved by the
CAA (Aircraft Flight Manual, the Airworthiness Limitations section of the
Instructions for Continued Airworthiness and the Certification
Maintenance Requirements (CMR) document, where applicable).
3.1.4 Office of Airworthiness
a. Liaison between the design organisation and the CAA with respect to all
aspects of the certification programme.
b. Ensuring that a handbook is prepared and updated as required in
21.A.243.
c. Co-operation with the CAA in developing procedures to be used for the
type certification process.
d. Issuing of guidelines for documenting compliance.
e. Co-operation in issuing guidelines for the preparation of the manuals
required by the applicable implementing rules, Service Bulletins,
drawings, specifications, and standards.
f. Ensuring procurement and distribution of applicable CS and
environmental protection requirements and other specifications.
g. Co-operating with the CAA in proposing the type-certification basis
h. Interpretation of CS and environmental protection requirements and
requesting decisions of the CAA in case of doubt.
i. Advising of all departments of the design organisation in all questions
regarding airworthiness, operational suitability, environmental protection
approvals and certification.
j. Preparation of the certification programme and co-ordination of all tasks
related to Type Investigation in concurrence with the CAA.
k. Regular reporting to the CAA about Type Investigation progress and
announcement of scheduled tests in due time.
l. Ensuring co-operation in preparing inspection and test programmes
needed for demonstration of compliance.
m. Establishing the compliance checklist and updating for changes.
n. Checking that all compliance documents are prepared as necessary to
demonstrate compliance with all CS and environmental protection
requirements, as well as for completeness, and signing for release of
the documents.
o. Checking the required type design definition documents described in
21.A.31 and ensuring that they are provided to the CAA for approval
when required.
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