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Commission Regulation (EU) No 1321/2014Show full title

Commission Regulation (EU) No 1321/2014 of 26 November 2014 on the continuing airworthiness of aircraft and aeronautical products, parts and appliances, and on the approval of organisations and personnel involved in these tasks (Recast) (Text with EEA relevance)

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  • Annex 1 Appendix 4 point 12 Annex 1 Appendix 4 point 13 renumbered as Annex 1 Appendix 4 point 12 by S.I. 2023/588 reg. 19(5)
  • Annex 1 Appendix 3 CAA Form 15b substituted by S.I. 2023/588 reg. 18
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  • Art. 5(7) inserted by S.I. 2023/588 reg. 15(3)
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  • Annex 5b point ML.A.401(b) substituted by S.I. 2023/588 reg. 29(2)
  • Annex 5b point ML.A.802(a) substituted by S.I. 2023/588 reg. 29(4)
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SUBPART AAIRCRAFT MAINTENANCE LICENCEU.K.
66.A.1ScopeU.K.

This section defines the aircraft maintenance licence and establishes the requirements for application, issue and continuation of its validity.

[F166.A.3 Licence categories and subcategories U.K.

Aircraft maintenance licences include the following categories and, where applicable, subcategories and system ratings:

(a)

Category A, divided into the following subcategories:

  • A1 Aeroplanes Turbine;

  • A2 Aeroplanes Piston;

  • A3 Helicopters Turbine;

  • A4 Helicopters Piston.

(b)

Category B1, divided into the following subcategories:

  • B1.1 Aeroplanes Turbine;

  • B1.2 Aeroplanes Piston;

  • B1.3 Helicopters Turbine;

  • B1.4 Helicopters Piston.

(c)

Category B2

The B2 licence is applicable to all aircraft.

(d)

Category B2L

The B2L licence is applicable to all aircraft other than those in Group 1 as set out in Point 66.A.5(1) and is divided into the following ‘ system ratings ’ :

  • communication/navigation (com/nav),

  • instruments,

  • autoflight,

  • surveillance,

  • airframe systems.

A B2L licence shall contain, as a minimum, one system rating.

(e)

Category B3

The B3 licence is applicable to piston-engine non-pressurised aeroplanes of 2 000 kg Maximum Take-off Mass (MTOM) and below.

(f)

Category L, divided into the following subcategories:

  • L1C: composite sailplanes,

  • L1: sailplanes,

  • L2C: composite powered sailplanes and composite ELA1 aeroplanes,

  • L2: powered sailplanes and ELA1 aeroplanes,

  • L3H: hot-air balloons,

  • L3G: gas balloons,

  • L4H: hot-air airships,

  • L4G: ELA2 gas airships,

  • L5: gas airships other than ELA2.

(g)

Category C

The C licence is applicable to aeroplanes and helicopters.]

Textual Amendments

[F166.A.5 Aircraft groups U.K.

For the purpose of ratings on aircraft maintenance licences, aircraft shall be classified into the following groups:

(1)

Group 1: complex motor-powered aircraft, helicopters with multiple engines, aeroplanes with maximum certified operating altitude exceeding FL290, aircraft equipped with fly-by-wire systems, gas airships other than ELA2 and other aircraft requiring an aircraft type rating when defined as such by the [F2CAA].

The [F2CAA] may decide to classify into Group 2, Group 3 or Group 4, as appropriate, an aircraft which meets the conditions set out in the first subparagraph, if it considers that the lower complexity of the particular aircraft justifies so.

(2)

Group 2: aircraft other than those in Group 1 belonging to the following subgroups:

(i)

subgroup 2a:

  • single turboprop engine aeroplanes,

  • those turbojet and multiple-turboprop aeroplanes classified by the [F2CAA] in this subgroup because of their lower complexity.

(ii)

subgroup 2b:

  • single turbine engine helicopters,

  • those multiple turbine engine helicopters classified by the [F2CAA] in this subgroup because of their lower complexity.

(iii)

subgroup 2c:

  • single piston engine helicopters,

  • those multiple piston engine helicopters classified by the [F2CAA] in this subgroup because of their lower complexity.

(3)

Group 3: piston engine aeroplanes other than those in Group 1.

(4)

Group 4: sailplanes, powered sailplanes, balloons and airships, other than those in Group 1.]

Textual Amendments

66.A.10ApplicationU.K.
(a)

An application for an aircraft maintenance licence or change to such licence shall be made on [F3a CAA Form 19] (see Appendix V) in a manner established by the [F4CAA] and submitted thereto.

(b)

An application for the change to an aircraft maintenance licence shall be made to the [F5CAA] of the Member State that issued the aircraft maintenance licence.

(c)

In addition to the documents required in points 66.A.10(a), 66.A.10(b) and 66.B.105, as appropriate, the applicant for additional basic categories or subcategories to an aircraft maintenance licence shall submit his/her current original aircraft maintenance licence to the [F6CAA] together with the [F7CAA Form 19].

(d)

F8...

(e)

F8...

(f)

Each application shall be supported by documentation to demonstrate compliance with the applicable theoretical knowledge, practical training and experience requirements at the time of application.

Textual Amendments

66.A.15EligibilityU.K.

An applicant for an aircraft maintenance licence shall be at least 18 years of age.

66.A.20PrivilegesU.K.
(a)

The following privileges shall apply:

1.

A category A aircraft maintenance licence permits the holder to issue certificates of release to service following minor scheduled line maintenance and simple defect rectification within the limits of tasks specifically endorsed on the certification authorisation referred to in point 145.A.35 of Annex II (Part-145). The certification privileges shall be restricted to work that the licence holder has personally performed in the maintenance organisation that issued the certification authorisation.

2.

A category B1 aircraft maintenance licence shall permit the holder to issue certificates of release to service and to act as B1 support staff following:

  • maintenance performed on aircraft structure, powerplant and mechanical and electrical systems,

  • work on avionic systems requiring only simple tests to prove their serviceability and not requiring troubleshooting.

Category B1 includes the corresponding A subcategory.

3.

A category B2 aircraft maintenance licence shall permit the holder:

(i)

to issue certificates of release to service and to act as B2 support staff for following:

  • maintenance performed on avionic and electrical systems, and

  • electrical and avionics tasks within powerplant and mechanical systems, requiring only simple tests to prove their serviceability; and

(ii)

to issue certificates of release to service following minor scheduled line maintenance and simple defect rectification within the limits of tasks specifically endorsed on the certification authorisation referred to in point 145.A.35 of Annex II (Part-145). This certification privilege shall be restricted to work that the licence holder has personally performed in the maintenance organisation which issued the certification authorisation and limited to the ratings already endorsed in the B2 licence.

The category B2 licence does not include any A subcategory.

4.

[F1A category B2L aircraft maintenance licence shall permit the holder to issue certificates of release to service and to act as B2L support staff for the following:

  • maintenance performed on electrical systems;

  • maintenance performed on avionics systems within the limits of the system ratings specifically endorsed on the licence, and

  • when holding the ‘ airframe system ’ rating, performance of electrical and avionics tasks within power plant and mechanical systems, requiring only simple tests to prove their serviceability.

5.

A category B3 aircraft maintenance licence shall permit the holder to issue certificates of release to service and to act as B3 support staff for the following:

  • maintenance performed on aeroplane structure, power plant and mechanical and electrical systems; and

  • work on avionics systems requiring only simple tests to prove their serviceability and not requiring troubleshooting.]

6.

[F9A category L aircraft maintenance licence shall permit the holder to issue certificates of release to service and to act as L support staff for the following:

  • maintenance performed on aircraft structure, power plant and mechanical and electrical systems;

  • work on radio, Emergency Locator Transmitters (ELT) and transponder systems; and

  • work on other avionics systems requiring simple tests to prove their serviceability.

Subcategory L2 includes subcategory L1. Any limitation to subcategory L2 in accordance with point 66.A.45(h) becomes also applicable to subcategory L1.

Subcategory L2C includes subcategory L1C.

7.

A category C aircraft maintenance licence shall permit the holder to issue certificates of release to service following base maintenance of the aircraft. The privileges apply to the aircraft in its entirety.]

(b)

The holder of an aircraft maintenance licence may not exercise its privileges unless:

1.

in compliance with the applicable requirements of Annex I (Part-M) and Annex II (Part-145); and

2.

in the preceding 2-year period he/she has, either had 6 months of maintenance experience in accordance with the privileges granted by the aircraft maintenance licence or, met the provision for the issue of the appropriate privileges; and

3.

he/she has the adequate competence to certify maintenance on the corresponding aircraft; and

4.

he/she is able to read, write and communicate to an understandable level in the language(s) in which the technical documentation and procedures necessary to support the issue of the certificate of release to service are written.

Textual Amendments

66.A.25Basic knowledge requirementsU.K.
(a)

[F1For licences other than categories B2L and L, an applicant for an aircraft maintenance licence, or for the addition of a category or subcategory to such a licence, shall demonstrate by examination a level of knowledge of the appropriate subject modules in accordance with Appendix I to Annex III (Part-66). The examination shall comply with the standard set out in Appendix II to Annex III (Part-66) and shall be conducted either by a training organisation appropriately approved in accordance with Annex IV (Part-147), or by the [F10CAA]].

(b)

[F1An applicant for an aircraft maintenance licence in category L within a given subcategory, or for the addition of a different subcategory, shall demonstrate by examination a level of knowledge of the appropriate subject modules in accordance with Appendix VII to Annex III (Part-66). The examination shall comply with the standard set out in Appendix VIII to Annex III (Part-66) and shall be conducted by a training organisation appropriately approved in accordance with Annex IV (Part-147), by the [F10CAA] or as agreed by the [F10CAA].

The holder of an aircraft maintenance licence in subcategory B1.2 or category B3 is deemed to meet the basic knowledge requirements for a licence in subcategories L1C, L1, L2C and L2.

The basic knowledge requirements for subcategory L4H include the basic knowledge requirements for subcategory L3H.

The basic knowledge requirements for subcategory L4G include the basic knowledge requirements for subcategory L3G.

(c)

An applicant for an aircraft maintenance licence in category B2L for a particular ‘ system rating ’ , or for the addition of another ‘ system rating ’ , shall demonstrate by examination a level of knowledge of the appropriate subject modules in accordance with Appendix I to Annex III (Part-66). The examination shall comply with the standard set out in Appendix II to Annex III (Part-66) and shall be conducted either by a training organisation appropriately approved in accordance with Annex IV (Part-147), or by the [F10CAA].]

(d)

[F1The training courses and examinations shall have been passed within 10 years prior to the application for an aircraft maintenance licence or the addition of a category or subcategory to such a licence. Should this not be the case, examination credits may be obtained in accordance with point (e).

(e)

The applicant may apply to the [F10CAA] for full or partial examination credits for the basic knowledge requirements for:

(i)

basic knowledge examinations that do not meet the requirement laid down in point (d);

(ii)

any other technical qualification considered by the [F10CAA] to be equivalent to the knowledge standard of Annex III (Part-66).

Credits shall be granted in accordance with Subpart E of Section B of this Annex (Part-66).

(f)

Credits expire 10 years after they were granted to the applicant by the [F10CAA]. The applicant may apply for new credits after expiration.]

Textual Amendments

66.A.30Basic experience requirementsU.K.
(a)

An applicant for an aircraft maintenance licence shall have acquired:

1.

for category A, subcategories B1.2 and B1.4 and category B3:

(i)

3 years of practical maintenance experience on operating aircraft, if the applicant has no previous relevant technical training; or

(ii)

2 years of practical maintenance experience on operating aircraft and completion of training considered relevant by the [F11CAA] as a skilled worker, in a technical trade; or

(iii)

1 year of practical maintenance experience on operating aircraft and completion of a basic training course approved in accordance with Annex IV (Part-147);

2.

for category B2 and subcategories B1.1 and B1.3:

(i)

5 years of practical maintenance experience on operating aircraft if the applicant has no previous relevant technical training; or

(ii)

3 years of practical maintenance experience on operating aircraft and completion of training considered relevant by the [F11CAA] as a skilled worker, in a technical trade; or

(iii)

2 years of practical maintenance experience on operating aircraft and completion of a basic training course approved in accordance with Annex IV (Part-147);

2a.

[F9for category B2L:

(i)

3 years of practical maintenance experience in operating aircraft, covering the corresponding system rating(s), if the applicant has no previous relevant technical training; or

(ii)

2 years of practical maintenance experience in operating aircraft, covering the corresponding system rating(s), and completion of training, considered relevant by the [F11CAA], as a skilled worker in a technical trade; or

(iii)

1 year of practical maintenance experience in operating aircraft, covering the corresponding system rating(s), and completion of a Part-147 approved basic training course.

For the addition of (a) new system rating(s) to an existing B2L licence, 3 months of practical maintenance experience relevant to the new system rating(s) shall be required for each system rating added.

2b.

for category L:

(i)

2 years of practical maintenance experience in operating aircraft covering a representative cross section of maintenance activities in the corresponding subcategory;

(ii)

as a derogation from point (i), 1 year of practical maintenance experience in operating aircraft covering a representative cross section of maintenance activities in the corresponding subcategory, subject to the introduction of the limitation provided for in point 66.A.45(h)(ii)(3).

For the inclusion of an additional subcategory in an existing L licence, the experience required by points (i) and (ii) shall be 12 and 6 months respectively.

The holder of an aircraft maintenance licence in category/subcategory B1.2 or B3 is deemed to meet the basic experience requirements for a licence in subcategories L1C, L1, L2C and L2.]

3.

[F12for category C with respect to complex motor-powered aircraft:

(i)

3 years of experience exercising category B1.1, B1.3 or B2 privileges on complex motor-powered aircraft or as support staff according to point 145.A.35, or, a combination of both; or

(ii)

5 years of experience exercising category B1.2 or B1.4 privileges on complex motor-powered aircraft or as support staff according to point 145.A.35, or a combination of both;

4.

For category C with respect to other than complex motor-powered aircraft: 3 years of experience exercising category B1 or B2 privileges on other than complex motor-powered aircraft or as support staff according to point 145.A.35, or a combination of both;]

5.

for category C obtained through the academic route: an applicant holding an academic degree in a technical discipline, from a university or other higher educational institution recognised by the [F11CAA], 3 years of experience working in a civil aircraft maintenance environment on a representative selection of tasks directly associated with aircraft maintenance including 6 months of observation of base maintenance tasks.

(b)

An applicant for an extension to an aircraft maintenance licence shall have a minimum civil aircraft maintenance experience requirement appropriate to the additional category or subcategory of licence applied for as defined in Appendix IV to this Annex (Part-66).

(c)

The experience shall be practical and involve a representative cross section of maintenance tasks on aircraft.

(d)

At least 1 year of the required experience shall be recent maintenance experience on aircraft of the category/subcategory for which the initial aircraft maintenance licence is sought. For subsequent category/subcategory additions to an existing aircraft maintenance licence, the additional recent maintenance experience required may be less than 1 year, but shall be at least 3 months. The required experience shall be dependent upon the difference between the licence category/subcategory held and applied for. Such additional experience shall be typical of the new licence category/subcategory sought.

(e)

Notwithstanding point (a), aircraft maintenance experience gained outside a civil aircraft maintenance environment shall be accepted when such maintenance is equivalent to that required by this Annex (Part-66) as established by the [F11CAA]. Additional experience of civil aircraft maintenance shall, however, be required to ensure adequate understanding of the civil aircraft maintenance environment.

(f)

Experience shall have been acquired within the 10 years preceding the application for an aircraft maintenance licence or the addition of a category or subcategory to such a licence.

Textual Amendments

66.A.40Continued validity of the aircraft maintenance licenceU.K.
(a)

The aircraft maintenance licence becomes invalid 5 years after its last issue or change, unless the holder submits his/her aircraft maintenance licence to the [F13CAA], in order to verify that the information contained in the licence is the same as that contained in the [F14CAA’s records], pursuant to point 66.B.120.

(b)

The holder of an aircraft maintenance licence shall complete the relevant parts of [F15CAA Form 19] (see Appendix V) and submit it with the holder's copy of the licence to the [F16CAA], unless the holder works in a maintenance organisation approved in accordance with Annex II (Part-145) that has a procedure in its exposition whereby such organisation may submit the necessary documentation on behalf of the aircraft maintenance licence holder.

(c)

Any certification privilege based upon a aircraft maintenance licence becomes invalid as soon as the aircraft maintenance licence is invalid.

(d)

The aircraft maintenance licence is only valid (i) when issued and/or changed by the [F17CAA] and (ii) when the holder has signed the document.

Textual Amendments

[F166.A.45 Endorsement with aircraft ratings U.K.
(a)

In order to be entitled to exercise certification privileges on a specific aircraft type, the holder of an aircraft maintenance licence needs to have their licence endorsed with the relevant aircraft ratings:

  • For category B1, B2 or C, the relevant aircraft ratings are the following:

    (i)

    for Group 1 aircraft, the appropriate aircraft type rating;

    (ii)

    for Group 2 aircraft, the appropriate aircraft type rating, manufacturer subgroup rating or full subgroup rating;

    (iii)

    for Group 3 aircraft, the appropriate aircraft type rating or full group rating;

    (iv)

    for Group 4 aircraft, for the category B2 licence, the full group rating.

  • For category B2L, the relevant aircraft ratings are the following:

    (i)

    for Group 2 aircraft, the appropriate manufacturer subgroup rating or full subgroup rating;

    (ii)

    for Group 3 aircraft, the full group rating;

    (iii)

    for Group 4 aircraft, the full group rating.

  • For category B3, the relevant rating is ‘ piston-engine non-pressurised aeroplanes of 2 000  kg MTOM and below ’ .

  • For category L, the relevant aircraft ratings are the following:

    (i)

    for subcategory L1C, the rating ‘ composite sailplanes ’ ;

    (ii)

    for subcategory L1, the rating ‘ sailplanes ’ ;

    (iii)

    for subcategory L2C, the rating ‘ composite powered sailplanes and composite ELA1 aeroplanes ’ ;

    (iv)

    for subcategory L2, the rating ‘ powered sailplanes and ELA1 aeroplanes ’ ;

    (v)

    for subcategory L3H, the rating ‘ hot-air balloons ’ ;

    (vi)

    for subcategory L3G, the rating ‘ gas balloons ’ ;

    (vii)

    for subcategory L4H, the rating ‘ hot-air airships ’ ;

    (viii)

    for subcategory L4G, the rating ‘ ELA2 gas airships ’ ;

    (ix)

    for subcategory L5, the appropriate airship type rating.

  • For category A, no rating is required, subject to compliance with the requirements of point 145.A.35 of Annex II (Part-145).

(b)

The endorsement of aircraft type ratings requires the satisfactory completion of one of the following:

  • the relevant category B1, B2 or C aircraft type training in accordance with Appendix III to Annex III (Part-66);

  • in the case of gas airship type ratings on a B2 or L5 licence, a type training approved by the [F18CAA] in accordance with point 66.B.130.

(c)

For other than category C licences, in addition to the requirements of point (b), the endorsement of the first aircraft type rating within a given category/subcategory requires satisfactory completion of the corresponding on-the-job training. This on-the-job training shall comply with Appendix III to Annex III (Part-66), except in the case of gas airships, where it shall be directly approved by the [F19CAA].

(d)

[F20[X1By derogation from points (b) and (c), for Group 2 and 3 aircraft, aircraft type ratings may also be endorsed on a licence after completing the following steps:

  • satisfactory completion of the relevant category B1, B2 or C aircraft type examination in accordance with Appendix III to this Annex (Part-66);

  • in the case of B1 and B2 category, demonstration of practical experience in the aircraft type. In that case, the practical experience shall include a representative cross section of maintenance activities relevant to the licence category.

In the case of a category C rating, for a person qualified through the academic route as referred to in point (a)(5) of point 66.A.30, the first relevant aircraft type examination shall be at the category B1 or B2 level.]]

(e)

For Group 2 aircraft:

(i)

the endorsement of manufacturer subgroup ratings for category B1 and C licence holders requires complying with the aircraft type rating requirements for at least two aircraft types from the same manufacturer, which combined are representative of the applicable manufacturer subgroup;

(ii)

the endorsement of full subgroup ratings for category B1 and C licence holders requires complying with the aircraft type rating requirements for at least three aircraft types from different manufacturers, which combined are representative of the applicable subgroup;

(iii)

the endorsement of manufacturer subgroup and full subgroup ratings for category B2 and B2L licence holders requires demonstration of practical experience which shall include a representative cross section of maintenance activities relevant to the licence category and to the applicable aircraft subgroup and, in the case of the B2L licence, relevant to the applicable system rating(s);

(iv)

by derogation from point (e)(iii), the holder of a B2 or B2L licence, endorsed with a full subgroup 2b, is entitled to be endorsed with a full subgroup 2c.

(f)

For Group 3 and 4 aircraft:

(i)

the endorsement of the full Group 3 rating for category B1, B2, B2L and C licence holders and the endorsement of the full Group 4 rating for B2 and B2L licence holders require demonstration of practical experience, which shall include a representative cross section of maintenance activities relevant to the licence category and to Group 3 or 4, as applicable;

(ii)

for category B1, unless the applicant provides evidence of appropriate experience, Group 3 rating shall be subject to the following limitations, which shall be endorsed on the licence:

  • pressurised aeroplanes,

  • metal-structure aeroplanes,

  • composite-structure aeroplanes,

  • wooden-structure aeroplanes,

  • aeroplanes with metal-tubing structure covered with fabric;

(iii)

by derogation from point (f)(i), the holder of a B2L licence, endorsed with a full subgroup 2a or 2b, is entitled to be endorsed with Groups 3 and 4.

(g)

For the B3 licence:

(i)

the endorsement of the rating ‘ piston engine non-pressurised aeroplanes of 2 000  kg MTOM and below ’ requires demonstration of practical experience, which shall include a representative cross section of maintenance activities relevant to the licence category;

(ii)

unless the applicant provides evidence of appropriate experience, the rating referred to in point (i) shall be subject to the following limitations, which shall be endorsed on the licence:

  • wooden-structure aeroplanes,

  • aeroplanes with metal-tubing structure covered with fabric,

  • metal-structure aeroplanes,

  • composite-structure aeroplanes.

(h)

For all L licence subcategories, other than L5:

(i)

the endorsement of ratings requires demonstration of practical experience which shall include a representative cross section of maintenance activities relevant to the licence subcategory;

(ii)

unless the applicant provides evidence of appropriate experience, the ratings shall be subject to the following limitations, which shall be endorsed on the licence:

(1)

for ratings ‘ sailplanes ’ and ‘ powered sailplanes and ELA1 aeroplanes ’ :

  • wooden-structure aircraft covered with fabric,

  • aircraft with metal-tubing structure covered with fabric,

  • metal-structure aircraft,

  • composite-structure aircraft,

(2)

for the rating ‘ gas balloons ’ :

  • other than ELA1 gas balloons; and

(3)

if the applicant has only provided evidence of one-year experience in accordance with the derogation contained in point 66.A.30(a)(2b)(ii), the following limitation shall be endorsed on the licence:

‘ complex maintenance tasks provided for in Appendix VII to Annex I (Part-M), standard changes provided for in point 21.A.90B of Annex I (Part-21) to Regulation (EU) No 748/2012 and standard repairs provided for in point 21.A.431B of Annex I (Part-21) to Regulation (EU) No 748/2012. ’

The holder of an aircraft maintenance licence in subcategory B1.2 endorsed with the Group 3 rating, or in category B3 endorsed with the rating ‘ piston engine non-pressurised aeroplanes of 2 000  kg MTOM and below ’ , is deemed to meet the requirements for the issuance of a licence in subcategories L1 and L2 with the corresponding full ratings and with the same limitations as the B1.2/B3 licence held.]

Editorial Information

Textual Amendments

66.A.50LimitationsU.K.
(a)

[F1Limitations introduced on an aircraft maintenance licence are exclusions from the certification privileges and, in the case of limitations referred to in point 66.A.45, they affect the aircraft in its entirety.]

(b)

For limitations referred to in point 66.A.45, limitations shall be removed upon:

1.

demonstration of appropriate experience; or

2.

after a satisfactory practical assessment performed by the [F21CAA].

(c)

For limitations referred to in point 66.A.70, limitations shall be removed upon satisfactory completion of examination on those modules/subjects defined in the applicable conversion report referred to in point 66.B.300.

Textual Amendments

66.A.55Evidence of qualificationU.K.

Personnel exercising certification privileges as well as support staff shall produce their licence, as evidence of qualification, within 24 hours upon request by an authorised person.

66.A.70Conversion provisionsU.K.

F22...

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