[state] Part 6 — Approved Maintenance Organisation



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6.5AMO Operating Rules

6.5.1.1AMO Procedures Manual


Note: The purpose of the AMO Procedures Manual is to set forth the procedures, the means, and methods of the AMO. Compliance with its contents will assure compliance with the Part 6 requirements, which is a pre-requisite to obtaining and retaining an AMO certificate.
Each AMO shall have an AMO Procedures Manual.

The AMO Procedures Manual shall:



      1. provide clear guidance to personnel on how the activities included in the airworthiness authority approval are managed, on their personal responsibilities and on how compliance with the appropriate continuing airworthiness requirements is achieved;

      2. include a statement of the organisation’s policies and objectives.

If AMO is also the AOC, the AMO’s procedures manual and the AOC’s maintenance control manual may be combined.

The AMO Procedures Manual and any subsequent amendments shall be approved by the Authority prior to use.

The AMO Procedures Manual and any other manual it identifies must:


      1. Include instructions and information necessary to allow the personnel concerned to perform their duties and responsibilities with a high degree of safety;

      2. Be in a form that is easy to revise and contain a system which allows personnel to determine current revision status;

      3. Have the date of the last revision printed on each page containing the revision;

      4. Not be contrary to any applicable [STATE] regulation or the AMO’s specific operating provisions; and

      5. Include a reference to appropriate civil aviation regulations.

ICAO Doc 9760, Third Edition (2013), Part III, Chapter 10: 10.3 and Attachment A

ICAO Annex 6: Part I: 8.7.2.1; 8.7.3.1; 8.7.3.2

14 CFR: 145.207; 145.209; 145.211

FAA AC 145-9

EASA 145.A.70

6.5.1.2Maintenance Inspection Procedures and Quality Assurance Systems

The AMO shall establish procedures, acceptable to the Authority, which ensure good maintenance practices and compliance with all relevant requirements of this Part.

The AMO shall ensure compliance with this paragraph by either:


      1. Establishing an independent quality assurance system to monitor compliance with and adequacy of the procedures; or

      2. Establishing a system of inspection to ensure that all maintenance is properly performed.

AMO’s using an independent quality assurance system shall include the audit procedures listed in the AMO Procedures Manual at IS 6.5.1.1.

ICAO Annex 6 Part 1: 8.7.4.1; 8.7.5.2

ICAO Doc 9760, Third Edition (2013), Part III: Chapter 10: 10.3

6.5.1.3Capability List

Each approved maintenance organisation must prepare and retain a current capability list approved by the Authority. The approved maintenance organisation may not perform maintenance, preventive maintenance, or alterations, on an article until the article has been listed on the capability list in accordance with this Part.

The capability list must identify each article by make and model, part number, or other nomenclature designated by the article’s manufacturer.

An article may be listed on the capability list only if the article is within the scope of the ratings and classes of the approved maintenance organisation’s certificate, and only after the approved maintenance organisation has performed a self-evaluation in accordance with 6.5.1.1(d)(18). The approved maintenance organisation must perform the self-evaluation described in this paragraph to determine that the maintenance organisation has all of the facilities, equipment, material, technical data, processes, housing, and trained personnel in place to perform the work on the article as required by this part. If the approved maintenance organisation makes that determination, it may list the article on the capability list.

The document of the evaluation described in paragraph (c) of this section must be signed by the accountable manager and must be retained on file by the approved maintenance organisation.

Upon listing an additional article on its capability list, the maintenance organisation must send a copy of the list to the Authority having jurisdiction over the approved maintenance organisation.

The capability list(s) must be available in the premises for inspection by the public and the Authority.

The self-evaluations must be available in the premises for inspection by the Authority.

The AMO shall retain the capability list(s) and self-evaluation(s) for two years from the date accepted by the accountable manager.

14 CFR: 145.215

6.5.1.4Contract Maintenance

The AMO must be approved for the work which is to be subcontracted and have the capability to assess the competence of the subcontractor.

An AMO may contract a maintenance function pertaining to an article to an outside source provided—


      1. The Authority approved the maintenance function to be contracted to the outside source; and

      2. The AMO maintains and makes available to the Authority in a format acceptable to the Authority, the following information—

        1. The maintenance functions contracted to each outside facility, and

        2. The name of each outside facility to whom the AMO contracts maintenance functions and the type of certificate and ratings, if any, held by each facility.

An AMO may contract a maintenance function pertaining to an article to a unlicensed person provided—

      1. The unlicensed person follows a quality control system equivalent to the system followed by the AMO;

        1. The AMO remains directly in charge of the work performed by the unlicensed person; and

        2. The AMO verifies, by test and/or inspection, that the work has been performed satisfactorily by the unlicensed person and that the article is airworthy before approving it for return to service.

The AMO, before approval for return to service, shall verify by test or inspection that the work has been performed satisfactorily following contract maintenance, preventive maintenance, or alterations in accordance with approved methods.

Note 1: An AMO that carries out maintenance for another AMO within its own approval scope is not considered to be subcontracting for the purpose of this paragraph.

Note 2: A list of contractors used by the AMO is approved by the Authority through the AMO Procedures Manual.

ICAO Doc 9760, Third Edition (2013), Part III, Chapter 10: 10.11

14 CFR: 145.217

EASA: 145.A.75(b) and Annex II AMC 145.A.75(b)

6.5.1.5Privileges of the Approved Maintenance Organisation

The AMO shall carry out the following tasks as permitted by and in accordance with the AMO Procedures Manual—



      1. Maintain or alter any aircraft or aeronautical product for which it is rated at the location identified in the approval certificate;

      2. Maintain any aircraft for which it is rated at any location subject to the need for such maintenance arising from unserviceability of the aircraft;

      3. Perform the activities in support of a specific AOC holder where that AOC has requested the services of the AMO at locations other than the location identified on the AMO certificate and the AMO has been rated to maintain the aircraft of that specific AOC holder at the requested location in the AMO operating provisions approved by the Authority; and

      4. Issue an approval for return to service or a maintenance release in respect of subparagraphs (a) (1), (2), and (3) of this subsection upon completion of maintenance in accordance with limitations applicable to the AMO.

The AMO may maintain or alter any article for which it is rated at a place other than the AMO, if—

      1. The function would be performed in the same manner as when performed at the AMO and in accordance with this Subpart;

      2. All necessary personnel, equipment, material, and technical and/or approved standards are available at the place where the work is to be done; and

      3. The AMO Procedures Manual sets forth approved procedures governing work to be performed at a place other than the AMO.

The AMO may contract out maintenance, preventative maintenance, or alteration, other than a complete type certificated product, in accordance with 6.5.1.4.

14 CFR: 145.201

EASA: 145.A.75

6.5.1.6Limitations on the AMO

The AMO shall maintain an aircraft or aeronautical product for which it is approved only when all necessary housing, facilities, equipment, tools, material, approved technical data and certifying staff are available.

An AMO may not contract out the maintenance, preventive maintenance, or alteration of a complete type-certificated product,

An AMO may not provide approval for return to service of a product following contract maintenance, preventive maintenance, or alterations without verifying by test or inspection that the work has been performed satisfactorily in accordance with approved methods.



14 CFR: 145.201

EASA: 145.A.80

6.5.1.7Certification of Release to Service of an Aircraft, Part, Component or Assembly

A certification of release to service shall be issued by appropriately authorised certifying staff when satisfied that all required maintenance of the aircraft has been properly carried out by the AMO in accordance with the AMO Procedures Manual.

A certification of release is required at the completion of any maintenance on an aircraft part, component or assembly when off the aircraft.

The release to service to be used for release of an aircraft or aeronautical part, component or assembly shall adhere to the following items.

The certification of release to service shall contain the following statement: Certifies that the work specified was carried out in accordance with current regulations and in respect to that work the aircraft/aircraft component is considered approved for release to service.”

The certification of release to service shall reference the data specified in the manufacturer's maintenance instructions or instructions for continued airworthiness.

Where instructions include a requirement to insure that a dimension or test figure is within a specific tolerance as opposed to a general tolerance, the dimension or test figure shall be recorded unless the instruction permits the use of GO/NO gauges. It is not normally sufficient to state that the dimension or the test figure is within tolerance.

The date such maintenance was carried out shall include when the maintenance took place relative to any life or overhaul limitation in terms of date/flying hours/cycles/landings etc., as appropriate.

When extensive maintenance has been carried out, it is acceptable for the certification of release to service to summarise the maintenance as long as there is a cross-reference to the work package containing full details of maintenance carried out. Dimensional information shall be retained in the work package record.

The person issuing the release to service shall use a full signature and preferably a certification stamp except in the case where a computer release to service system is used. In this latter case, the Authority will need to be satisfied that only the particular person can electronically issue the release to service.

When a part of component is released to service, the AMO shall complete Model CAA Form AAT as contained in IS: 6.5.1.7.

Note: One such method of compliance with item (c)(6) is the use of a magnetic or optical personal card in conjunction with a personal identity number (PIN) which is keyed into the computer and known only to the individual.

Note: An aeronautical product which has been maintained off the aircraft requires the issue of a certification of release to service (Model CAA Form AAT) for such maintenance and another certification of release to service of the aircraft in regard to maintenance being properly accomplished on the aircraft. The release to service of the aircraft will typically be made by the AMO in the aircraft technical log maintenance records section.

ICAO Doc 9760, Third Edition (2013), Part III, Chapter 10: 10.9

FAA Order 8130.21G; FAA Form 8130-3

14 CFR: 43.5

EASA: 145.A.50

6.5.1.8Maintenance Records

The AMO shall record, in a form acceptable to the Authority, all details for maintenance work performed.

The AMO shall provide a copy of each certification of release to service to the aircraft operator, together with a copy of any specific airworthiness data used for repairs/alterations performed.

The AMO shall retain a copy of all detailed maintenance records and any associated airworthiness data for two years from the date the aircraft or aeronautical product to which the work relates was released from the AMO.



Note: 14 CFR and JAR require retaining maintenance records for two years. ICAO Annex 6, Part I: 8.7.6.2 requires a minimum period of one year.

Each person who maintains, performs preventive maintenance, rebuilds, or modifies an aircraft/aeronautical product shall make an entry in the maintenance record of that equipment:



      1. A description and reference to data acceptable to the Authority of work performed.

      2. The date of completion of the work performed.

      3. The name of the person performing the work if other than the person specified in this subsection.

      4. If the work performed on the aircraft/aeronautical product has been performed satisfactorily, the signature, certificate number, and kind of certificate held by the person approving the work.

      5. The authorised signature, the AMO certificate number, and kind of licence held by the person approving or disapproving for return to service the aircraft, airframe, aircraft engine, propeller, appliance, component part, or portions thereof.

      6. The signature constitutes the approval for return to service only for the work performed.

      7. In addition to the entry required by this paragraph, major repairs and major alterations shall be entered on a form, and the form disposed of by the person performing the work, in the manner prescribed by the Authority in Part 5: 5.7.1.1.

No person shall describe in any required maintenance entry or form an aircraft or aeronautical component as being overhauled unless—

      1. Using methods, techniques, and practices acceptable to the Authority, it has been disassembled, cleaned, inspected as permitted, repaired as necessary, and reassembled; and

      2. It has been tested in accordance with approved standards and technical data, or in accordance with current standards and technical data acceptable to the Authority, which have been developed and documented by the holder of the type certificate, supplemental type certificate, or a material, part, process, or appliance approval under a TSO.

No person may describe in any required maintenance entry or form, an aircraft or other aeronautical product as being rebuilt unless it has been—

      1. Disassembled, cleaned, inspected as permitted;

      2. Repaired as necessary; and

      3. Reassembled and tested to the same tolerances and limits as a new item, using either new parts or used parts that either conform to new part tolerances and limits, or to approved oversized or undersized dimensions.

No person may approve for return to service any aircraft or aeronautical product that has undergone maintenance, preventive maintenance, rebuilding, or alteration unless—

      1. The appropriate maintenance record entry has been made; and

      2. The repair or alteration form authorised by or furnished by the Authority has been executed in a manner prescribed by the Authority;

If a repair or alteration results in any change in the aircraft operating limitations or flight data contained in the approved aircraft flight manual, those operating limitations or flight data shall be appropriately revised and set forth as prescribed by the Authority.

Maintenance record entries for inspections. The person approving or disapproving for return to service an aircraft/aeronautical product, after any inspection performed in accordance with this regulation, shall make an entry in the maintenance record of that equipment containing the following information—



      1. The type of inspection and a brief description of the extent of the inspection;

      2. The date of the inspection and aircraft total time in service;

      3. The authorised signature, the AMO certificate number, and kind of licence held by the person approving or disapproving for return to service the aircraft, airframe, aircraft engine, propeller, appliance, component part, or portions thereof;

      4. If the aircraft is found to be airworthy and approved for return to service, the following or a similarly worded statement—I certify that this aircraft has been inspected in accordance with (insert type) inspection and was determined to be in airworthy condition;

      5. If the aircraft is not approved for return to service because of needed maintenance, non-compliance with the applicable specifications, airworthiness directives, or other approved data, the following or a similarly worded statement—I certify that this aircraft has been inspected in accordance with (insert type) inspection and a list of discrepancies and unairworthy items dated (date) has been provided for the aircraft owner or operator; and

      6. If an inspection is conducted under an inspection programme provided for in this regulation, the entry shall identify the inspection programme accomplished, and contains a statement that the inspection was performed in accordance with the inspections and procedures for that particular programme.

Listing of discrepancies. If the person performing any inspection required by this regulation finds that the aircraft is not airworthy or does not meet the applicable type certificate data sheet, airworthiness directives, or other approved data upon which its airworthiness depends, that person shall give the owner or lessee a signed and dated list of those discrepancies.

ICAO Annex 6, Part 1, 8.7.6.1; 8.7.6.2

ICAO Doc 9760, Third Edition (2013), Part III: Chapter 10: 10.8

14 CFR: 145.219

EASA: 145.A.55

6.5.1.9Airworthiness Data- Instructions For Continued Airworthiness

The AMO shall be in receipt of all airworthiness data appropriate to support the work performed from the Authority, the aircraft/aeronautical product design organisation, and any other approved design organisation in the State of Manufacture or State of Design, as appropriate.



Note: The Authority may classify data from another authority or organisation as mandatory and may require the AMO to hold such data.

Where the AMO modifies airworthiness data specified in paragraph (a) to a format or presentation more useful for its maintenance activities, the AMO shall submit to the Authority an amendment to the AMO Procedures Manual for any such proposed alterations for acceptance.

All airworthiness data used by the AMO shall be kept current and made available to all personnel who require access to that data to perform their duties.

The IS: 6.5.1.9 contains detailed requirements concerning airworthiness data.



ICAO Doc 9760, Third Edition (2013), Part III: Chapter 10: 10.6.2.1

14 CFR: 145.109(d)

EASA: 145.A. 45

6.5.1.10Reporting of Unairworthy Conditions

The AMO shall report to the Authority and the aircraft design organisation of the State of Design any identified condition that could present a serious hazard to the aircraft.

Reports shall be made on a form and in a manner prescribed by the Authority and contain all pertinent information about the condition known to the AMO. The report shall contain at least the following items—


      1. Aircraft registration number.

      2. Type, make and model of the article.

      3. Date of the discovery of the failure, malfunction, or defect.

      4. Time since last overhaul, if applicable.

      5. Apparent cause of the failure, malfunction, or defect.

      6. Other pertinent information that is necessary for more complete identification, determination of seriousness, or corrective action.

Where the AMO is contracted by an AOC holder to carry out maintenance, that AMO shall report to the AOC holder any condition affecting the aircraft or aeronautical product.

Reports shall be made as soon as practicable, but in any case within three days of the AMO identifying the condition to which the report relates.



Note: The FAA term used is service difficulty reporting. The EASA term used is occurrence reporting.

ICAO Annex 6, Part I: 8.5.1; 8.5.2

ICAO Annex 8: Part II: Chapter 4: 4.3.4; 4.3.5; 4.3.8

14 CFR: 145.221

EASA: 145.A.60

6.5.1.11Authority to Conduct Inspections

Each certificated approved maintenance organisation must allow the Authority to inspect that approved maintenance organisation and any of its contract maintenance facilities at any time to determine compliance with this part. Arrangements for maintenance, preventive maintenance, or alterations by a contractor must include provisions for inspections of the contractor by the Authority.



14 CFR: 145.223

EASA: 145.A.90

6.5.1.12AMO Performance Standards

Each certificated approved maintenance organisation that performs any maintenance, preventive maintenance, or modifications for an air operator certificated under Part 9 having an approved maintenance programme under Part 9.4.1.12 and approved continuous maintenance programme under Part 9.4.1.13 shall perform that work in accordance with the AOC holder’s manuals.

Except as provided in paragraph (a), each certificated approved maintenance organisation shall perform its maintenance and modification operations in accordance with the applicable standards in Part 5, Airworthiness. It shall maintain, in current condition, all manufacturer’s service manuals, instructions, and service bulletins that relate to the articles that it maintains or modifies.

In addition, each certificated approved maintenance organisation with an avionics rating shall comply with those sections in Part 5 that apply to electronic systems, and shall use materials that conform to approved specifications for equipment appropriate to its rating. It shall use test apparatus, shop equipment, performance standards, test methods, alterations, and calibrations that conform to the manufacturer’s specifications or instructions, approved specification, and if not otherwise specified, to accepted good practices of the aircraft avionics industry.



14 CFR 145.205

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MODEL CIVIL AVIATION REGULATIONS

Part 6 — IMPLEMENTING STANDARDS

[STATE]

Versions 2.8

November 2014

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PART 6 — IMPLEMENTING STANDARDS


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