Page 177 - UK Regulation Part 21 Initial Airworthiness Annex I (consolidated) March 2022

PART 21 - INITIAL AIRWORTHINESS (ANNEX I)

include the following:
a) Organisation name, address, telephone, telex and facsimile numbers.
b) Document title, and company document reference No (if any).
c) Amendment or revision standard identification for the document.
d) Amendment or revision record sheet.
e) List of effective pages with revision/date/amendment identification for each page.
f) Contents list or index.
g) A distribution list for the Handbook.
h) An introduction, or foreword, explaining the purpose of the document for the
guidance of the organisation’s own personnel. Brief general information concerning
the history and development of the organisation and, if appropriate, relationships
with other organisations which may form part of a group or consortium, must be
included to provide background information for the CAA.
i) The certificate of approval must be reproduced in the document.
j) Identification of the department responsible for administration of the Handbook.
Note: In the case of an initial or revised approval it is recognised that certificate will be
issued after CAA agreement to the handbook content in draft form. Arrangements for
formal publication in a timely manner must be agreed before the certificate of approval is
issued.
3. An updating system must be clearly laid down for carrying out required amendments and
modifications to the handbook.
4. The handbook may be completely or partially integrated into the company organisation
manual. In this case, identification of the information required by 21.A.243 must be
provided by giving appropriate cross-references, and these documents must be made
available, on request, to the CAA.
21.A.265(a) AMC1-ELA Obligations of the holder – Administration of the design organisation handbook
The design organisation handbook (DOH) of the applicant should be in a language that will permit the
best use of it by all the personnel who perform tasks for the design organisation. The DOH may be
completely or partially integrated into the company’s organisation manual. Refer also to AMC-ELA No
1 to 21.A.243 for the required content.
21.A.265(b) AMC1-ELA Obligations of the holder – Use of the design organisation handbook as a basic working document
It is the responsibility of the HDO to ensure that the design organisation handbook (DOH) is used as a
basic working document within the design organisation. In this sense, the HDO should include a
statement to the DOH that the information provided within the DOH is binding.
The organisation should ensure that personnel have access to, and are familiar with, that part of the
content of the DOH that covers their activities. This may be done, for example, by distributing the
information that updates of the documentation are available, and by making the documentation
available at a location where the information is accessible to all affected persons.
Staff at the design organisation who are involved in the demonstration of compliance of products
under the DOA approval should be able to demonstrate their awareness of the definitions provided
within the DOH. This can be achieved by any suitable means, and it does not necessarily require
training sessions to be provided. Regular internal monitoring should be conducted to verify that the
relevant staff members are aware of the relevant definitions.
Monitoring of compliance with this documentation should be done by systematic means. These
means do not need to be limited to, or to even include auditing, but they can be accomplished by
structured experience exchanges, regular quality meetings, brainstorming or lessons-learned
sessions, project reviews at appropriate phases of the product development, or other similar means
accepted by CAA.
21.A.265(b) GM Use of the Handbook
1. The handbook should be signed by the Chief Executive and the Head of the design
organisation and declared as a binding instruction for all personnel charged with the
development and type investigation of products.
2. All procedures referenced in the handbook are considered as parts of the handbook and
therefore as basic working documents.
21.A.265(c) AMC1-ELA Obligations of the holder – Determination of compliance
The organisation should apply the methods detailed in AMC-ELA No 2 to 21.A.239(a) to determine
whether the design of the product, or changes or repairs to them, comply with the applicable
requirements, and to ensure that the design of the product contains no unsafe features.
21.A.265(e) AMC1-ELA Obligations of the holder – Providing information in response to airworthiness directives
The design organisation handbook (DOH) should contain a declaration to ensure that the proposal of
appropriate corrective actions/required inspections is submitted to the CAA in cases where the CAA
has issued airworthiness directives in response to potentially unsafe conditions of a product under the
responsibility of the approved DO. In addition, the provisions in the DOH should ensure that following
the approval by thr CAA of any proposals referred to under this point, the DO makes appropriate
descriptions and procedures for the corrective actions/required inspections available to all known
operators or owners of the product and, upon request, to any person that is required to comply with
the airworthiness directive.
21.A.265(h) GM Designation of data and information issued under the authority of a design organisation approval (DOA) holder
1. INTENT
This GM provides guidance for complying with the obligation of 21.A.265(h), and
addresses the various aspects that the DOA holder should cover in order to have a
comprehensive procedure for the designation of data and information.
2. SCOPE
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