Page 221 - UK Regulation Part 21 Initial Airworthiness Annex I (consolidated) March 2022

PART 21 - INITIAL AIRWORTHINESS (ANNEX I)

1. Purpose of the Procedures
The purpose is to investigate the applicant production organisation for compliance with
Part 21 Subpart G in relation to the requested terms of approval. When appropriate, this
procedure should also be used to investigate significant changes or applications for
variation of scope of approval.
The following procedure assumes that the application has been accepted and that an
investigation team has been selected.
2. Initiation
The POA Team Leader initiates the procedure by:
2.1 arranging a meeting with the POAT members to review the information provided in
accordance with 21.A.134 and to take account of any knowledge that the POAT
members have regarding the production standards of the applicant
2.2. left blank
2.3 arranging a meeting with the applicant in order to:
- enable the applicant to make a general presentation of its organisation and
products, parts or appliances
- enable the POAT to describe the proposed investigation process
- enable the POAT to confirm to the applicant the identity of those managers
nominated in accordance with Part 21 Subpart G who need to complete a
CAA Form 4 (See CAA Form 4 for Production Organisations on CAA
website:). The applicant should provide a completed copy of CAA Form 4 for
each of the key management staff identified by Part 21 Subpart G. The CAA
Form 4 is a confidential document and will be treated as such.
3. Preparation
The POAT:
3.1 studies the information gathered in the initiation phase
3.2 establishes an investigation plan which:
- takes account of the location of the POA applicants facility as identified per
GM No 3 to 21.B.220(c)
- defines areas of coverage and worksharing between POAT members taking
account of their individual expertise
- defines areas where more detailed investigation is considered necessary
- establishes the need for external advice to POAT members where expertise
ay be lacking within the team
- includes completion of a comprehensive plan for the investigation in order to
present it to the applicant
- recognises the need to:
- review the documentation and procedures
- verify compliance and implementation
- audit a sample of products, parts, and appliances
3.3 co-ordinates with the appropriate Part 21 Section A Subpart J design organisation
approval Teams sufficiently for both parties to have confidence in the applicants
coordination links with the holder of the approval of the design (as required by
21.A.133)
3.4 establishes liaison with the applicant to plan mutually suitable dates and times for
visits at each location needing investigation, and also to agree the investigation plan
and approximate time scales with the applicant
4. Investigation
The POAT:
4.1 makes a check of the POE for compliance with Part 21 Subpart G
4.2 audits the organisation, its organisational structure, and its procedures for
compliance with Part 21 Subpart G, using CAA Form 56 as a guide during the
investigation, and as a checklist at the end of it
4.3. generates compliance checklists for investigations of working processes and
procedures on site as required
4.4 accepts or rejects each CAA Form 4 completed by the key nominated personnel in
accordance with 21.A.145(c)(2)
4.5 checks that the production organisation exposition (POE) standard reflects the
organisation, its procedures, practices and 21.A.143. Having checked and agreed a
POE issue or subsequent amendment, the CAA should have a clear procedure to
indicate its acceptance or rejection
4.6 makes sample audits at working level to verify that:-
(i) work is performed in accordance with the system described in the POE
(ii) products, parts, appliances or material produced by the organisation are in
conformity with the applicable design data (see GM 21.B.235(b)(4)).
(iii) facilities, working conditions, equipment and tools are in accordance with the
POE and appropriate for the work being performed
(iv) competence and numbers of personnel is appropriate for the work being
performed
(v) co-ordination between production and design is satisfactory
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