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FAQ n.19055

Release to service of NDT tasks by Part-145 or Part-CAO organisations

Answer

This answer is separated in two tables. One table is for organisation holding a Part-145 approval and the second table is for organisations holding a Part-CAO approval.

Part-145:

Part-145 organisation

Certifying staff required

Qualification system

General Release procedure

Release procedure for an NDT inspection

Aircraft
(class A)

 

The release of the aircraft maintenance carried out under A class rating has to be performed by certifying staff holding a Part-66 licence. (B1 or B3 or C or L certifying staff under the organisation’s A rating.)

Licencing of personnel has to follow Part-66 regulation.

The release is either on the aircraft technical log or issuing an aircraft release to service statement.

A Part-145 organisation holding an A approval rating on a particular aircraft type and having in its approved scope of work NDT inspections for this aircraft type.
 
This organization needs to have part-66 certifying staff and NDT personnel qualified in accordance with 145.A.30(f).
 
In this case the NDT inspector performs the NDT task and signs off the work order. The aircraft is released by appropriately qualified B1, B3, C or L certifying staff under the organisation’s A rating.
 
Please note that the release  may include not only the NDT task but also the associated tasks (removal of panels, blankets, wires, re-installation, etc), or the NDT task may be part of a base maintenance check.

Engines
Class B

 

The release of the engine maintenance carried out under B class rating has to be performed by engine’s certifying staff.

The certifying staff is qualified following the procedures established by the organisation in compliance with the competent authority requirements. Part-66 licence is not required.

The release of works performed under class B is done on an EASA Form 1 (or by means of an internal release document when this component is for the organisation’s own use and the organisation has in place the related internal procedures in the MOE).

A Part-145 organisation holding a B rating approval on a particular engine type and having in its approved scope of work NDT inspections for this engine type.

This organization needs to have “engine” certifying staff (qualified in accordance with company procedures) and NDT personnel qualified in accordance with 145.A.30(f).

In this case the NDT inspector performs the NDT task and signs off the work order. The engine certifying staff releases the works performed to the engine (including NDT inspection) on an EASA Form 1.

 

Components
Class C

The release of the component maintenance carried out under C class rating has to be performed by components certifying staff (CCS).

The certifying staff is qualified following the procedures established by the organisation in compliance with the competent authority requirements. The CCS is not required  to have a Part-66 licence.

The release of works performed under class C is done on an EASA Form 1 (or by means of an internal release document when this component is for the organisation’s own use and the organisation has in place the related internal procedures in the MOE).

A Part-145 organisation holding a C rating approval on a particular component and having in its approved scope of work NDT inspections for this component.

This organization needs to have CCS and NDT personnel qualified in accordance with 145.A.30(f).

In this case the NDT inspector performs the NDT task and signs off the Work Order / Engineering Order. The CCS releases the works performed to the component (including NDT inspection) on an EASA Form 1.

Specialised services

The release of the maintenance carried out under D1 class rating has to be performed by “specialised services” certifying staff.

The certifying staff is qualified following the procedures established by the organisation in compliance with EN4179, Part-66 licence is not required.

The release of works performed under class D1 rating is done on an EASA Form 1 or using another form of release to service (other than aircraft release to service) as defined by the organisation in the MOE in compliance with 145.A.50 and approved by the competent authority.

A Part-145 organisation holding a D1 approval on a particular NDT method. The approved scope of work will be NDT inspections on this method.

This organisation needs to have NDT certifying staff qualified in accordance with 145.A.30(f).

In this case the NDT certifying staff performs and releases the NDT task on an EASA Form 1 or using another form of release to service (other than aircraft release to service) as defined by the organisation in the MOE in compliance with 145.A.50 and approved by the competent authority.

Note: In case of non-EU organisations approved by the EASA in accordance with Part-145, the Part-66 licence could be read as “Part-66 or national licence in accordance with Part-145 Appendix IV”

Part-CAO:

Part-145 organisation

Certifying staff required

Qualification system

General Release procedure

Release procedure for an NDT inspection

Aircraft
(class aeroplanes, helicopter, airships, balloons or sailplanes)

 

The release of the aircraft maintenance carried out under A class rating has to be performed by certifying staff holding a Part-66 licence.

Licencing of personnel has to follow Part-66 regulation.

The release is either on the aircraft technical log or issuing an aircraft release to service statement.

A Part-CAO organisation holding an aeroplanes, helicopter, airships, balloons or sailplanes particular aircraft type or and having in its approved scope of work NDT inspections for this aircraft type.
 
This organization needs to have part-66 certifying staff and NDT personnel qualified in accordance with CAO.A.035(f).
 
In this case the NDT inspector performs the NDT task and signs off the work order. The aircraft is released by appropriately qualified B1, B3 or L certifying staff under the organisation’s aeroplanes, helicopter, airships, balloons or sailplanes rating.
 
Please note that the release  may include not only the NDT task but also the associated tasks (removal of panels, blankets, wires, re-installation, etc), or the NDT task may be part of a base maintenance check.

Engines or Components other than complete engines
Class Components

 

The release of the engine maintenance carried out under components class rating has to be performed by ‘engine’s’ or ‘components other than complete engines‘ certifying staff.

The certifying staff is qualified following the procedures established by the organisation, Part-66 licence is not required.

The release of works performed under class components is done on an EASA Form 1 (or by means of an internal release document when this component is for the organisation’s own use and the organisation has in place the related internal procedures in the CAE).

A Part-CAO organisation holding a components rating approval on a particular engine type or ‘components other than complete engines‘ and having in its approved scope of work NDT inspections for this engine type.
This organization needs to have “engine” or ‘components other than complete engines‘ certifying staff (qualified in accordance with company procedures) and NDT personnel qualified in accordance with CAO.A.035(f).
In this case the NDT inspector performs the NDT task and signs off the work order. The engine or ‘components other than complete engines‘ certifying staff releases the works performed to the engine or ‘components other than complete engines‘ (including NDT inspection) on an EASA Form 1. 

 

Components
Class C

The release of the component maintenance carried out under C class rating has to be performed by components certifying staff (CCS).

The certifying staff is qualified following the procedures established by the organisation in compliance with the competent authority requirements. The CCS is not required  to have a Part-66 licence.

The release of works performed under class C is done on an EASA Form 1 (or by means of an internal release document when this component is for the organisation’s own use and the organisation has in place the related internal procedures in the MOE).

A Part-145 organisation holding a C rating approval on a particular component and having in its approved scope of work NDT inspections for this component.

This organization needs to have CCS and NDT personnel qualified in accordance with 145.A.30(f).

In this case the NDT inspector performs the NDT task and signs off the Work Order / Engineering Order. The CCS releases the works performed to the component (including NDT inspection) on an EASA Form 1.

Specialised services

The release of the maintenance carried out under ‘Specialised Services’ class rating has to be performed by “specialised services” certifying staff.

The certifying staff is qualified following the procedures established by the organisation in compliance with EN4179, Part-66 licence is not required.

The release of works performed under class ‘Specialised Services’ rating is done on an EASA Form 1 or using another form of release to service (other than aircraft release to service) as defined by the organisation in the CAE in compliance with CAO.A.070(a) and approved by the competent authority (AMC1 CAO.A.070 (a)(1)).

A Part-CAO organisation holding a ‘Specialised Services’ approval on a particular NDT method. The approved scope of work will be NDT inspections on this method.
This organisation needs to have NDT certifying staff qualified in accordance with CAO.A.035(f).
In this case the NDT certifying staff performs and releases the NDT task on an EASA Form 1 or using another form of release to service (other than aircraft release to service) as defined by the organisation in the CAE in compliance with CAO.A.070 and approved by the competent authority.

Note: In case of non-EU organisations approved by the EASA in accordance with Part-145, the Part-66 licence could be read as “Part-66 or national licence in accordance with Part-145 Appendix IV”

 

 

 

 

Last updated
01/02/2021

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