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1 UNCONTROLLED COPY WHEN PRINTED Regulatory Article 4947 This RA has been substantially re-written; for clarity no change marks are presented - please read RA in entirety RA Continuing Airworthiness Management - MRP Part M Sub Part G Rationale There are specific requirements to be met by an organization to qualify for the issue or continuation of an approval for the management of aircraft continuing airworthiness Contents : Military Continuing Airworthiness Management Organization (Mil CAMO) Responsibilities Regulation Mil CAMO Responsibilities For all aircraft within its control, the approved Mil CAMO shall: a. Develop and control an Aircraft Maintenance Programme, support any applicable reliability programme, and propose amendments and additions to the maintenance schedule to the Type Airworthiness Authority (TAA). b. Manage the embodiment of modifications and repairs. c. Ensure that all maintenance is carried out to the required quality and in accordance with (iaw) the Aircraft Maintenance Programme, and released iaw RA d. Ensure that all applicable Special Instructions (Technical) (SI(T)) are applied. e. Ensure that Military Maintenance Organizations or MRP Part 145 Approved Maintenance Organizations correctly manage faults reported, or discovered during scheduled maintenance f. Co-ordinate scheduled maintenance, the application of SI(T)s and the replacement of service life limited parts. g. Manage and archive all continuing airworthiness records and the MF700/operator's technical log. h. Assure that the weight and moment statement reflects the current status of the aircraft. i. Initiate and coordinate any necessary actions and follow-up activity highlighted by an occurrence report. Acceptable Means of Compliance Mil CAMO Responsibilities a 1. The Mil CAMO should undertake trending and analysis of maintenance data. This will enable it to act upon faults and arising rates, deferred faults, unscheduled arising, fault issues/trends etc in order to highlight proactively any 1 RA Certification of Aircraft and Component Release (MRP 145.A.50). RA 4947 Issue 2 UNCONTROLLED COPY WHEN PRINTED Page 1 of 8

2 Regulatory Article 4947 UNCONTROLLED COPY WHEN PRINTED Acceptable Means of Compliance concerns/issues/adverse trends. Based on these, the Mil CAMO should propose amendments and additions to the existing maintenance schedules to the TAA as a result of the analysis. b Modifications 2. The Mil CAMO should assess the impact of all planned modifications, consider implications for the Aviation Duty Holder (DH) / Defence Contractor Flying Organization fleet and develop an implementation strategy in consultation with the TAA and the embodiment organization. 3. The Mil CAMO should schedule the modification plan and then manage modifications embodiment. Repairs a. For modifications with a safety impact, the Mil CAMO should ensure that the embodiment is completed within the TAA-mandated timescales for the platform. b. The Mil CAMO should monitor embodiment progress through to full fleet embodiment. c. The Mil CAMO should ensure configuration control of the modification and that the overall state of the aircraft is maintained. 4. The Mil CAMO should: c a. Schedule the repair plan and then manage its embodiment in conjunction with the repair organization. b. Request an appropriate repair scheme or concession for damage outside approved data. c. Monitor the use of repair schemes and concessions and highlight issues to the Aviation DH, or Accountable Manager (Continuing Airworthiness) (AM(CAw)) (defined in RA ) or requirements to the TAA. 5. For Forward, the Mil CAMO is part of the Aviation DH s / AM(CAw) s assurance system for the standards and practices of work carried out on Forward units. For Depth, the Mil CAMO should agree the work package content and assure its satisfactory completion. 6. The Mil CAMO should: a. Ensure the maintenance organization has access to the applicable current approved data, including those relating to modifications and repairs. b. Seek instructions from the TAA where no approved data exists for faults arising during maintenance. c. Be responsible for the management and oversight of any issues arising from the maintenance including the delivery and acceptance processes. 7. The Mil CAMO should maintain an airworthy fleet, and therefore assure the standard of output from any maintenance organization. a. Where the Mil CAMO and maintenance organization share the same Quality Assurance (QA) system, this could be achieved through the internal QA process. For contracted organizations, the Mil CAMO should ensure appropriate contract cover is in place in order to provide equivalent levels of assurance. b. Where the Mil CAMO and maintenance organization do not share the same QA system, such assurance should be achieved through either formal visits to the organization or external/3rd party auditing. 2 RA Continuing Airworthiness Responsibilities. Page 2 of 8 UNCONTROLLED COPY WHEN PRINTED RA 4947 Issue 2

3 UNCONTROLLED COPY WHEN PRINTED Regulatory Article 4947 Acceptable Means of Compliance d 8. The Mil CAMO should ensure the satisfaction of SI(T)s or other directives from authorized organizations (eg TAAs, the MAA) that have a continuing airworthiness impact on aircraft within its Fleet within the mandated timescales. 9. The Mil CAMO should manage the compliance of such instructions by: a. Arranging for their distribution, and ensuring their receipt. b. Tasking appropriate maintenance organizations. c. Ensuring compliance within prescribed timescales or seeking and obtaining their deferment. d. Considering any follow-up action that may be required. 10. The Mil CAMO should support the development of such instructions by advising of any impact on availability, capability and sustainability. 11. The Mil CAMO should maintain records of extant SI(T)s and advise the issuing authority and Aviation DH or Accountable Manager (Military Flying) (AM(MF)) of those that cannot be satisfied within required timescales. e 12. The Mil CAMO should ensure the use of a Military Maintenance Organization or MRP/Mil Part 145 Approved Maintenance Organization to conduct corrective maintenance, and assure that they utilise appropriately-authorised personnel for the task. 13. The Mil CAMO should review Limitations/Acceptable Defferred Faults in order to: a. Highlight and address adverse trends, notifying these to the TAA, Aviation DH or AM(CAw) as appropriate. b. Identify any cumulative risk. c. Ensure that, for out-of-limits faults and damage, advice has been sought from the TAA on airworthiness risk. 14. The Mil CAMO should ensure that a register is maintained of reported instances of aircraft displaying Uncommanded Flying Control Movements, Control Restrictions or other abnormal flying characteristics, with any detected trends being thoroughly investigated. f 15. The Mil CAMO should plan and control all maintenance activity, including the use of latitudes, deferments or concessions as part of the fleet management task. 16. The Mil CAMO should inform the Aviation DH or AM(MF) if there are any significant aspects of maintenance that cannot be carried out and advise of the implications. g 17. Continuing airworthiness records should include: a. Aircraft technical log, engine log books and any log books/cards for service life limited components (The Configuration Record). b. Current status of: (1) SI(T)/Airworthiness Directives (AD). (2) Modifications and repairs. (3) Compliance with Aircraft Maintenance Programme. (4) Service Life Limited Components. (5) Weight and Moment. (6) Deferred maintenance. RA 4947 Issue 2 UNCONTROLLED COPY WHEN PRINTED Page 3 of 8

4 Regulatory Article 4947 UNCONTROLLED COPY WHEN PRINTED Acceptable Means of Compliance 18. To ensure traceability the Mil CAMO should maintain a centralised record of all locally manufactured parts and develop and issue procedures to coordinate this across maintenance organizations. This should include details of authorisations, quality control checks, concessions, component identification and any remedial action. The Mil CAMO should ensure proper recording of the date of manufacture and fit, description and part/drawing number, Serial Number Of Work for component manufacture, details of heat treatment and proof testing, specification and conformity references, and aircraft/component serial number. 19. The Mil CAMO should develop and issue procedures for lost aircraft maintenance forms, which should include any search or investigation requirements and a policy on the use of duplicated documents. 20. The Mil CAMO should develop and issue procedures for the use of electronic maintenance forms and continuing airworthiness records. The auditing of such records should be included as part of the organization s QA and Military Airworthiness Review (Mil AR) processes, noting that this may require specialist skills and training. 21. The Mil CAMO should have a procedure for data locking continuing airworthiness records in support of Service Inquiries and as directed by the MAA. 22. Retention of continuing airworthiness records should be carried out iaw RA and RA h 23. Nil. i 24. The Mil CAMO should maintain oversight of occurrence reports raised (this includes, but is not limited to, D-ASOR, MF760s, Serious Fault Reports) and subsequent action. 25. The Mil CAMO should report to the MAA, TAA and any other Mil operator any identified condition of an aircraft, component or maintenance procedure that endangers Air Safety as identified by the Mil CAMO. 26. Where an aircraft occurrence report has an airworthiness aspect, the Mil CAMO should ensure the investigation of the occurrence and subsequent recovery of the aircraft (including any associated components) is robust. 27. Where the occurrence report has a continuing airworthiness implication for the fleet, the Mil CAMO should ensure that appropriate remedial action is taken to minimise re-occurrence. This could include: a. Changes to the Aircraft Maintenance Programme. b. Addressing Human Factors issues (which could include training, working conditions etc). Guidance Material Mil CAMO Responsibilities a 28. The TAA manages the Air System Document Set (ADS), which is the method by which approved data is published. This includes the approved Maintenance Schedules. The Mil CAMO develops and controls the Aircraft Maintenance Programme iaw the ADS endorsed by the TAA. 29. The Aircraft Maintenance Programme consists of those maintenance activities applicable to a specific tail number, as defined by the Mil CAMO, based on its current usage, role, configuration and operating environment. It will include applicable elements of the maintenance schedule, maintenance activities pertinent to life limited components, the application of SI(T)s, inspections introduced due to repairs or faults, modifications, reliability programmes and local Air Engineering Orders. 30. Continual assessment of the utility of the maintenance aspects of the ADS (ie 3 RA Record Keeping - MRP Part M Sub Part G. 4 RA Quality System - MRP Part M Sub Part G. Page 4 of 8 UNCONTROLLED COPY WHEN PRINTED RA 4947 Issue 2

5 UNCONTROLLED COPY WHEN PRINTED Regulatory Article 4947 Guidance Material its fitness for purpose) rests with the Mil CAMO. The TAAs own the information contained within the APs, whilst the Mil CAMO ensures it can be used. 31. For MRCOA managed iaw Civil Aviation Authority Civil Aviation Publication 562 Leaflet B-40 the aircraft will be operated under the jurisdiction of the MAA and are subject to the MRP regulations. Additionally, the MRCOA will also be managed by an organization holding an European Aviation Safety Agency (EASA) Part M, Subpart G and I approval for the aircraft type, and maintained iaw a maintenance programme approved iaw EASA Part M.A.302. However, for the avoidance of doubt and iaw the MRP, the TAA is still responsible for completeness and accuracy of the Approved Data that forms part of the ADS; this includes amendment to the Aircraft Maintenance Program, advice on out-of-limits faults and damage, repair schemes or concessions. It is a responsibility of the Mil CAMO to ensure data used in maintaining the Continuing Airworthiness of their aircraft meets these requirements. 32. The Mil CAMO will monitor fleet usage and any proposed changes to the use of the aircraft type (eg changes to flying hours, SOIU, planned environmental changes deployments to the desert, arctic, embarked operations etc), so that impact on the effectiveness of the Aircraft Maintenance Programme can be assessed and incorporated. The Mil CAMO is to inform the TAA as necessary so that impact on the type-approved data within the ADS can be assessed and incorporated. The Mil CAMO will attend platform Integrity Working Groups, as organized by the TAA, as a key stake holder. 33. The TAA will determine whether any requirements arising from recommendations or changes requested by the Mil CAMO are deliverable and appropriate within existing funding/support contracts. If they are not achievable, then the TAA must engage with Mil CAMO to address priorities/funding lines to agree what will be delivered. 34. The Mil CAMO will obtain assurance of the effectiveness of the Aircraft Maintenance Programme through the Mil AR process and other Mil CAMO tasks, the condition and standard of individual aircraft, receipt checks from Depth and the condition of the fleet as a whole. 35. The Mil CAMO must manage the trending and analysis of the effectiveness of the Aircraft Maintenance Programme from a continuing airworthiness perspective and consider where appropriate - reliability/affordability issues. The TAAs will maintain specific reliability programmes and will continue to monitor platform and equipment reliability, fault issues/trends, arising rates etc to improve the efficiency and effectiveness of the maintenance schedule (systems and components) and to drive down support costs (often as part of the platform support contract). These two activities must be coherent to ensure that changes to the Maintenance Schedule continue to meet user requirements whilst maintaining type airworthiness. 36. The Mil CAMO proposes amendments to the Maintenance Schedules to meet the way it operates its aircraft by highlighting to the TAA any requirements or issues (operational or engineering) it is aware of that would benefit from either a minor schedule amendment or a major schedule review (eg restructuring or repackaging maintenance schedules or specific activities that would improve the effectiveness of the maintenance carried out and/or increase the platform availability or capability for the Aviation DH or AM(MF)). 37. The Mil CAMO must ensure that the TAA has a plan to undertake the required Maintenance Schedule reviews and that funding lines are planned. 38. The TAA must also be informed of any aircraft-related low level aviation engineering orders, eg Aviation Engineering Standing Orders or Aviation Engineering Routine Orders. b Modifications 39. The Mil CAMO will consider reliability/availability/maintainability issues associated with delivery of modifications and repairs, taking into account Aviation DH or AM(MF) fleet capability/availability requirements to meet operational and training commitments. RA 4947 Issue 2 UNCONTROLLED COPY WHEN PRINTED Page 5 of 8

6 Regulatory Article 4947 UNCONTROLLED COPY WHEN PRINTED Guidance Material 40. The Mil CAMO is not responsible for identifying the requirement for capability modifications. 41. The TAA will determine whether a modification is deliverable within existing funding lines/support contracts. 42. The TAA will manage and approve the modification leaflet. Modifications are developed by the appropriate DAOS approved organization. 43. There are a number of reasons for modifying an aircraft, including airworthiness, reliability, efficiency, survivability and capability. In managing their embodiment the Mil CAMO must: Repairs a. Schedule the embodiment of airworthiness modifications. b. Advise the Aviation DH or AM(MF) on the impact of non-airworthiness modifications and the scheduling of embodiment where applicable. c. In consultation with embodiment organizations and/or TAA, help determine affordability of embodiment and advise the Aviation DH or AM(CAw) accordingly. d. Ensure that configuration control of the modification and overall airworthiness condition of the aircraft is maintained. e. Maintain oversight of the assembly, storage and issue of Modification kits. 44. The Mil CAMO must maintain oversight of individual airframe airworthiness as well as trends across the fleet. Therefore, whilst the requirement for repairs is likely to derive from the maintenance organization, the Mil CAMO must coordinate the scheduling of repairs and manage their approvals where suitable data is not available. This will be achieved by: c a. All requests for approved data/repair schemes being made to the TAA through the Mil CAMO. b. Performing the function of fleet manager/controller. c. Consulting with repair organizations to determine repair priorities. d. Deciding where repairs are carried out and managing the tasking and transfer process where appropriate. e. Authorising cannibalisation from Category 3 and Category 4 aircraft undergoing repair to facilitate recovery of aircraft. 45. The Project Team (PT) will set up the support contract and framework where aircraft/component maintenance is contracted out to an Approved Organization on behalf of the Mil CAMO. 46. Where appropriate the Mil CAMO will: a. Conduct input and output meetings for each aircraft to establish the required maintenance (including any applicable modifications, repairs, SI(T)s and upgrades) and ensure its satisfactory completion. b. Manage the completion or deferment of emerging work, seeking and obtaining approved data. 47. Maintenance organizations must notify the Mil CAMO at the earliest opportunity that it has deviated from Technical Information. When a notification has been received, the Mil CAMO must, having acknowledged receipt, consider the implications and provide comment on the deferral with a view to seeking/obtaining and advising appropriate remedial action. d 48. As part of maintaining an airworthy fleet, pro-active management of SI(T)s from authorized organizations is required. Tail number recording of applicability and Page 6 of 8 UNCONTROLLED COPY WHEN PRINTED RA 4947 Issue 2

7 UNCONTROLLED COPY WHEN PRINTED Regulatory Article 4947 Guidance Material compliance with such instructions will provide configuration control. This includes any applicable timescales that may be mandated by the authorised organization. 49. For civil-derivative aircraft, such instructions may include certain ADs as determined by the TAA. e 50. Nil. f 51. The PT may have an influence on the maintenance plan eg: a. Providing the link between contracted maintenance organization and Mil CAMO. b. Identifying any shortfalls in funding or contracted maintenance-manhours to enable the Mil CAMO / Aviation DH / AM(CAw) to prioritise and/or seek appropriate resources/funding. 52. Where a service life limited part s life cannot be ascertained, the Mil CAMO must ensure that it is not used until such life can be determined, recovered or the part disposed of. g 53. Assurance of correct recording of aircraft and component Continuing Airworthiness information can be provided by Mil AR surveyor, who would undertake a documented review of aircraft records as part of the Mil AR process. h 54. The weight and moment statements will be checked as part of the Mil AR process to provide assurance that: a. Aircraft configuration reflects that recorded in the MF700/technical log/lis. b. Changes to weight and moment since last weigh have been accurately calculated and recorded. 55. Although managed by the Mil CAMO, the Mil CAMO itself is not responsible for carrying out the weighing activity. i 56. The Mil CAMO must ensure/direct appropriate follow-up activity, keeping the Aviation DH or AM(MF) apprised of any significant airworthiness issues. This would include ensuring the satisfactory completion of the maintenance aspects of the aircraft s D-ASOR. 57. Where the occurrence report has a type airworthiness implication the Mil CAMO must assure itself that appropriate remedial action is being taken by the TAA/OEMs. This could be assured by: a. Raising a MF760. b. Identifying the requirement for a Follow Up Report to the occurrence report to be carried out by the TAA. RA 4947 Issue 2 UNCONTROLLED COPY WHEN PRINTED Page 7 of 8

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