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S3C1 - PERFORMANCE, SUPERVISION, INSPECTION AND MANAGEMENT OF MAINTENANCE WITHIN AN AMO
Table of Contents
1. This chapter describes the functions of performance, supervision, inspection and management of maintenance in an Approved Maintenance Organisation (AMO), and defines the roles and responsibilities of the Tradesperson, Trade Supervisor, Independent Inspector, Maintenance Assurance Inspector and Maintenance Manager.
PERFORMANCE AND SUPERVISION
2. TAREGs mandate an authorised person must certify for maintenance they have either performed or supervised. For maintenance requiring a single signature, the person performing the maintenance is responsible for the maintenance. For maintenance requiring supervision, the supervisor is responsible for the maintenance. Throughout this publication, this person responsible for the maintenance is known as the Maintenance Certifier.
3. The Maintenance Certifier is certifying that:
4. The SMM or delegate may authorise an AC/W(E) or above to carry out the responsibilities of a Tradesperson on aircraft and aeronautical product within the AMO. The scope and level of this authorisation is detailed in the person’s record of training and employment document.
5. Maintenance performed by personnel as a Tradesperson requires the supervision of a Trade Supervisor.
6. When a Tradesperson performs maintenance under the supervision of a Trade Supervisor, the Tradesperson is not certifying for the maintenance performed as the Maintenance Certifier, this is the function of the Trade Supervisor.
7. The specific responsibilities of a Tradesperson are detailed in Annex A.
8. An example of a record of training and employment document authorisation form is in Annex B.
Self Certifying Tradesperson
9. The SMM or delegate may authorise a Tradesperson as a Self Certifying Tradesperson (SCT) on aircraft and aeronautical product within the AMO. The scope and level of this authorisation must be detailed in their record of training and employment document and must not exceed the scope of their Tradesperson authorisations. The AMO must determine if any maintenance tasks are to be excluded from being performed by SCTs .
10. Maintenance performed by personnel as an SCT does not require supervision.
11. When an SCT performs maintenance, the SCT singularly certifies for the maintenance performed. A Tradesperson performing and certifying maintenance as an SCT is the Maintenance Certifier.
12. Notwithstanding an SCT authorisation, the Maintenance Manager (MM) after assessment of the task in accordance with MM responsibilities detailed in Annex A, may require the assignment of a Trade Supervisor to the maintenance.
Maintenance that has been assessed in this way requires certification by both the Tradesperson and Trade Supervisor.
13. The SMM or delegate may authorise appropriately qualified, trained and experienced personnel to perform the responsibilities of a Trade Supervisor (TS) on aircraft and aeronautical product within the AMO; a TS should be a CPL(E) (or LCPL for Army) or above. The specific responsibilities of a Trade Supervisor are detailed in Annex A.
14. The SMM or delegate may authorise a LAC(E) as a TS where it is appropriate.
15. The Trade Supervisors scope and level of responsibility encompasses the supervision and inspection of the entire maintenance performed by a Tradesperson(s) and certifying for the maintenance as the Maintenance Certifier.
16. A quality inspection is a visual and/or physical verification that a task/component conforms to a prescribed standard. Inspections reduce the likelihood of errors which would adversely affect technical airworthiness.
Independent Maintenance Inspection
17. An Independent Maintenance Inspection (IMI) is a quality inspection by an authorised person who is independent of the maintenance performed. Where an IMI is required, the Tradesperson and Trade Supervisor or SCT cannot proceed past that point until the inspection has been carried out, and the task/component has been found to conform to the prescribed standard. IMIs do not diminish the responsibilities of the Maintenance Certifier assigned to the maintenance. IMIs should be carried out as soon as practicable, best practice is within 24 hours following maintenance certification.
18. The SMM or delegate may authorise appropriately qualified, trained and experienced personnel to perform the responsibilities of an Independent Inspector (II) on aircraft and aeronautical product within the AMO; an II should be a SGT(E) or above. The specific responsibilities of an Independent Inspector are detailed in Annex A.
19. The SMM or delegate may authorise a CPL(E) as a II where it is appropriate.
20. Criteria for Assessing Independence. There is no requirement for the Independent Inspector to be completely isolated from the maintenance. A person shall be considered sufficiently independent when the following criteria are satisfied:
21. Independent Inspectors scope and level of responsibility is limited to that of conducting IMIs and DOES NOT include supervision or management of the maintenance.
System Program Office Prescribed Independent Maintenance Inspections
22. Independent Maintenance Inspections (IMIs) must be performed when prescribed by an System Program Office (SPO) for Safety Critical Items and Systems (SCIS) as specified in authorised maintenance data. IMIs will be specified by the SPO when SCIS are replaced, adjusted, repaired, modified and/or reconnected, with specified inspections and serviceability criteria. Details of IMIs on SCIS are provided in Annex C.
23. IMIs must be recorded in the recording and certification system in accordance with the requirements of Section 4 Chapter 2—Recording and Certification of Aircraft and Aeronautical Product Maintenance.
Omitted Independent Maintenance Inspections
24. If an AMO believes that an IMI on a SCIS has been omitted from authorised maintenance data, they must contact the responsible SPO as required by AAP 7001.053 – Electronic Technical Airworthiness Management Manual. Whilst awaiting SPO action and to reduce the impact on aircraft availability or maintenance efficiency, the AMO may approve and insert the omitted step(s) as per the requirements of AAP 7001.053 and continue with maintenance. AMOs are to comply with SPO determination once received. Annex C provides a list of systems that should be considered when determining if an IMI has been omitted.
Maintenance Assurance Inspection
25. There will be times when operational, economic, environmental conditions, fatigue, inexperience or other human factors may necessitate a Maintenance Assurance Inspection (MAI) be carried out. A MAI can be carried out in conjunction with maintenance and can be conducted on any system or aeronautical product (SCIS and non SCIS). These inspections are not IMIs and should not be classified as such.
26. A MAI should be prescribed when maintenance personnel determine that:
27. A MAI must be documented as a discrete entry in the ‘Details of Unserviceability/Corrective Action’ fields of the recording and certification system and detail the full scope of the inspection to be carried out.
Maintenance Assurance Inspector
28. Trade Supervisors or above may carry out the responsibilities of a Maintenance Assurance Inspector on aircraft and aeronautical product within the AMO.
29. To carry out a MAI, maintenance personnel must not have performed the role of Tradesperson, Trade Supervisor, Independent Inspector or SCT for the maintenance. MAIs do not diminish the responsibilities of the Maintenance Certifier assigned to the maintenance task.
30. The specific responsibilities of a Maintenance Assurance Inspector are detailed in Annex A.
31. An Maintenance Manager (MM) is required for all maintenance tasks, including those tasks required to prepare an aircraft for flight.
32. The SMM or delegate may authorise appropriately qualified, trained and experienced personnel to perform the responsibilities of an MM within the AMO; an MM should be a SGT(E) or above.The specific responsibilities of an MM are detailed in Annex A.
33. The SMM or delegate may authorise a CPL(E) as an MM where it is appropriate.
Personnel performing the role of a MM may also perform the role of an Independent Inspector on the same maintenance task provided they do not compromise their independence to the task. Only one role may be performed at a given time.
34. The MMs role involves planning, organising, directing and controlling one or more maintenance teams in the conduct of maintenance. This encompasses the management of the maintenance from both the administrative and technical perspectives. Monitoring the progress of maintenance activities is an oversight function and does not include supervision, which is the responsibility of the Trade Supervisor. By providing oversight to the maintenance activities the MM ensures that any factors that may impact the conduct of the maintenance as personnel progress through them are assessed and acted upon.
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