Par 2-1 Page 7 Certification Maintenance Requirements. This revision also added text and revised flowcharts to clarify the FD logic. It was a major rewrite of the L/HIRF protection systems.
(12) ATA MSG-3 Operator/Manufacturer Scheduled Maintenance Development Revision 2009.1 (December 2009). Changes introduced in this version added structural health monitoring and scheduled structural health monitoring concepts and revised fatigue damage.
This change added note requiring General Visual Inspections developed from Category 5 or 8 logic be retained as system and powerplant tasks, and not to become covered by zonal inspections.
2-2. MAINTENANCE REVIEW BOARD REPORT.
a. Purpose of an MRBR. Industry and regulatory authorities generate an MRBR as a coordinated effort of achieving timely compliance with the applicable certification regulatory requirements and the minimum scheduled airworthiness suitability requirements. An MRBR contains the minimum scheduled interval/tasking requirements for a particular aircraft and on-wing engine maintenance programs. Develop the MRBR in accordance with the guidelines in this AC. Any additional requirements developed, employing different ground rules using MSG-3 must be submitted with selection criteria to the Industry Steering Committee and the regulatories for consideration and inclusion in the MRBR. Do not confuse the MRBR requirements with an operator maintenance program. After FAA approval, the requirements become a base or framework around which each operator can develop its own individual aircraft maintenance program.
b. Use of the MSG Analysis Process. You must use the latest version of the Air Transportation Association of America Maintenance Steering Group (MSG) analysis process and procedures for the development of an MRBR for all new, derivative, and optimization of aircraft and engines. Reapplication for a TC requires using the most recent latest version of the MSG logic process. The FAA no longer supports MSG-2 at the committee or working group level.
Each OEM/TCH is responsible for supporting the regulatory requirements for their MSG-2 aircraft.
c. Approval of an Operator’s Program Performance. Aircraft/engine design and performance form the MRBR requirements. Operators’ program performance is the responsibility of the local regulatory authority. The FAA must approve an operator’s aircraft maintenance program and methods used to implement these MRBR requirements. Refer to Figure 2-1.
FIGURE 2-1. MRB PROCESS FLOWCHART Maintenance Review Board Timeline (MRB is active roughout the aircraft lifecycle) Maintenance Review Board Process Aircraft Operational Life Proposed MRB TC Applicant Tasks & Intervals TC Applicant TeCueSS FAA O convene MRB Operators provide the TC Holder with reports of task adequacy, task failures, unanticipated ISC Res Analysis Reviews and MRB Chair necessary to substantiate the tasks and to problems, and age-condition information Acceptance? Approves Report adjust task intervals. Operators assist the TC holder to perform age-exploration sampling WG Analysis -Manufacturers
MRB, ISC & WG Established -Operators - MRO ROVISOTS MRB Report -ACO/ECO Observer Operators implement the maintenance Discussion, feedback & program provided in the ICA or develop their rationalization of CMRs _Syst/Powerpla own program, based on the initial prepares design & maintenance program requirements experience data Zonal Prog contained in the ICA and service experience Tor analysis amo review for WGs, Su anD MKE Type Certification ICA pplication for TC Final Design aintenance Manual Introduction Soneduind into before issuance of first A/W ICA acceptance required Systems Description certificate or delivery of first A/W A/C to customer, whichever Limitations CMRS Servicing Info Finalized CMM may be utilized AW ATA ISpec 2200, GAMA Spec 2 & 7, or AECMA Approved by 1000D or other acceptable FAA ACO ALI/CMR ICA format Post Type Certification
2-3. MRB REPORT PROPOSAL DELIVERY SCHEDULE GUIDELINES. The original equipment manufacturer (OEM)/type certificate holder (TCH) may concurrently build the MRBR proposal (MRBRP). Portions of the MRBRP may be submitted for consideration when the design is frozen and applicable minimum scheduled interval/tasking requirements become mature and complete. This will improve the quality of the proposal by reducing discrepancies at the end of the process. The OEM/TCH Policy and Procedures Handbook (PPH) must be approved/accepted before the start of any working group meetings. Deliver all work group data packages and documents to the regulatory authorities 30 working days before scheduled meetings. Deliver the final MRBP and any supporting documents to the MRB chairperson 90 working days before expected approval of the document.
2-4. MINIMUM SCHEDULED INTERVAL/TASKING REQUIREMENTS. The OEM/TCH must develop internal instructions and guidelines to enable the validation of all maintenance procedures written to support MRBR tasks, and then the OEM/TCH must validate them. The objective of the validation is to ensure that the procedure is possible to perform and that the procedure meets the intent of the MRBR task. At a minimum where and when requested by FAA, the OEM/TCH must make available a completed aircraft and the necessary qualified maintenance personnel to demonstrate to the FAA that Failure Effect Category 5 and 8 safety Page 8 Par 2-2
tasks, can be adequately performed and that the procedure meets the intent of the MRB task.
Additional tasks may be validated at FAA’s discretion.
NOTE: Figure 2-1 outlines the relationships between the various documents involved in the creation of the minimum scheduled interval/tasking requirements, including the MRBR.
2-5. CERTIFICATION MAINTENANCE REQUIREMENTS (CMR). During aircraft design certification and concurrent with the MRB process, leading up to the type certification process, the OEM/TCH accomplishes an analysis, in accordance with Title 14 of the Code of Federal Regulations (14 CFR) part 23, § 23.1309; part 25, § 25.1309; part 27, § 27.1309; and part 29, § 29.1309. The analysis intends to detect any safety-significant latent failures that would, in combination with one or more other specific failures or events, result in a hazardous or catastrophic condition. This system safety assessment leads to a design decision to create a candidate CMR. A MSG Category 9 task may not take credit for candidate CMR. For further information regarding this subject please see the current editions of Advisory Circulars (AC) 23.1309-1, System Safety Analysis and Assessment for Part 23 Airplanes;
AC 25-1309-1, System Design and Analysis; 25-19, Certification Maintenance Requirements;
AC 27-1, Certification of Normal Category Aircraft; and AC 29-2, Certification of Transport Category Rotorcraft. Refer to Figure 2-2.
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FIGURE 2-2. CERTIFICATION MAINTENANCE REQUIREMENT AND MRB
PROCESS INTERFACE 300000000 CERTIFICATION PROCESS Re-evaluation/Redesign Safety Analysis Certification Maintenance
(25.1309, etc.) Candidate Certification Coordination Committee (CMCC) Design Properly Justified Engineering Maintenance Requirement (CCMR) • CCMR vs MRB task comparison Judgement CMR Selection
• TC Applicant
• Manufacturers • Operator:
• ACO Speclalist • MRB Chairpersor TC
• Manufacturers Applicant Operators Group Activity ISC Working • ACO Specialist • MRB Advisor ACO TC Data Sheet Approval
• MSG-3 analysis Discussion & Feedback CMR APEMRS 1 For Info.
Proposed MRB TC only (Zones) Conal Inspectio ection Task and Intervals Applicant FAA MRB Chairperson (SSIs) (MSIs) * Systems an s and Powerplar ACO: Alrcraft Certification Office Review & ISC: Industry Steering Committee Accept FAA MRB: Maintenance Revlew Board MSG: Maintenance Steering Group MRB MSI: Malntenance Significant Items Report SSI: Structural Significant Item TC: Type Certificate MRB PROCESS Page 10 Par 2-5
CHAPTER 3. INDUSTRY PARTICIPATION
3-1. INDUSTRY STEERING COMMITTEE. The original equipment manufacturer (OEM)/type certificate holder (TCH) will work with the expected participating operators of the aircraft, the engine OEM/TCH, and other product vendors to form an industry steering committee (ISC) to address the minimum scheduled interval/tasking requirements for the aircraft and engines. Representatives from aircraft, engine, propeller, and appliance manufacturers, and intended operators normally comprise the ISC. Its chairperson will work with the Federal Aviation Administration (FAA) MRB chairperson, who is responsible for coordinating with other participating regulatory authorities to (1) develop and establish a Policy and Procedures Handbook (PPH) for the development of the MRB Report (MRBR) proposal; and (2) direct the activities of the working groups (WG) and prepare the MRBR. Under the direction of the selected ISC chairperson, the ISC will perform the functions in the PPH, listed in paragraph 3-2.
As applicable, the following information should be in each PPH. Assemble the PPH in this basic format per Appendix 3.
3-2. ISC FUNCTIONS. Perform these functions:
a. Approve the PPH and forward it to the MRB chairperson for review and acceptance.
The FAA MRB chairperson will direct to the OEM/TCH further comments during the MRB PPH review process. The ISC must approve the initial PPH and all subsequent revisions; the FAA must accept them before any WG meetings can begin.
b. Determine the number and type of each WG that will be necessary and then organize and manage those groups. The ISC will ensure that a minimum of three separate operators attend each WG meeting.
c. Provide the MRB chairperson with a list of the number and various type of each WG, the name and affiliation of each member, and any subsequent personnel changes.
d. Arrange for required aircraft technical/MSG training for all ISC and WG members, and FAA/regulatory authorities.
e. Invite the MRB chairperson and selected MRB members to ISC meetings.
f. Invite other regulatory authorities to ISC and WG meetings, with concurrence and coordination of the MRB chairperson.
g. Attend ISC/MRB meetings.
h. Review all WG analyses and presentations. Return to the WG for further review analysis with which the ISC does not concur. The ISC must establish a tracking system to resolve these actions and issues.
i. ISC will accept the WG analyses/tasks.
j. Provide complete and accurate meeting minutes for all ISC and WG meetings. Establish a method of distributing and tracking all meeting minutes.
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k. Establish a tracking system to ensure resolution of all maintenance issues and open action items or concerns. Document and resolve all maintenance issues and open action items before presenting an MRBR proposal to the MRB chairperson.
l. Provide to the appropriate MRB members all supporting technical data/analysis for the proposed MRBR.
m. Review and provide comments on proposed MRBR.
3-3. MSG WORKING GROUPS. Appropriate representatives of the OEM/TCH (aircraft/engine), vendors, owners, operators, maintenance organizations and regulatory authorities must comprise WGs. An industry representative will chair the WG; he or she is selected by the WG and accepted by the ISC. WG responsibilities include the following functions additional to those included in paragraph 3-2:
a. Develop minimum scheduled interval/tasking requirements for new or derivative aircraft/engine using the latest revision of the MSG process and latest approved PPH.
b. Establish sampling requirements when an analysis determines that such sampling is applicable and effective in the identification of the cause of failure.
c. Produce a set of meeting minutes for each WG activity.
3-4. OEM/TCH FUNCTIONS. The OEM/TCH will perform the following functions:
a. Develop and prepare a draft PPH for ISC approval.
b. Provide required aircraft technical/MSG training for all ISC and WG members, and FAA/regulatory authorities before holding the first WG meeting.
c. Provide the ISC with a comprehensive list of Maintenance Significant Items (MSI) and Structural Significant Items (SSI), and the items precluded from the MSI/SSI list before beginning any ISC/WG meeting.
d. Arrange for the required attendance of the appropriate OEM/TCH design personnel at each ISC/WG meeting.
e. Provide WG members with current technical data to support the analysis of each MSI, SSI, and zones of the aircraft for analysis by each WG. The data are required 30 days before the ISC/WG meeting.
f. Arrange for technical support and access to the aircraft or appropriate OEM/TCH and or vendor facility for the review and validation of all analysis and tasks.
g. Provide the ISC/MRB and appropriate WG members, during each ISC/MRB meeting, with an updated report of all Airworthiness Limitation (ALI) item, Certification Maintenance Requirements (CMR), and all design changes.
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h. Ensure that the OEM/TCH manuals contain information and procedures for accomplishing all on-aircraft systems/structures/zonal tasks covered in the MRBR.
i. Participate in all ISC and WG activities in support of the development of the MRBR.
j. Provide the MRB chairperson a copy of all supporting technical data/analysis for the proposed MRBR at the conclusion of the project.
k. Submit the MRBR proposal to the MRB chairperson at least 90 working days before scheduled approval.
NOTE: Where the OEM/TCH conduct sampling and analytical inspections on an opportunity basis, the following procedures apply: (1) The OEM/TCH will provide timely notification to the MRB chairperson or delegate regarding the time and location of the inspection to permit MRB chairperson or delegate participation. When the MRB chairperson or delegate attendance is not possible, the OEM/TCH must provide a copy of the complete inspection report to the MRB chairperson. (2) Subsequent to the first three inspections of the complete engine or modules, the MRB chairperson in coordination with the Boston Aircraft Evaluation Group will determine further regulatory authority participation on a case-by-case basis on technical issues only.
Par 3-4 Page 13 (and 14)
CHAPTER 4. FAA PARTICIPATION
4-1. UNITED STATES OEM/TCH. The original equipment manufacturer (OEM)/type certificate holder (TCH) formally notifies the responsible Aircraft Evaluation Group (AEG) manager of its intention to develop a Maintenance Review Board (MRB) Report (MRBR) proposal.
a. Assigning an MRB Chairperson. The appropriate AEG manager will assign a qualified individual as MRB chairperson to manage the specific MRB process for the Federal Aviation Administration (FAA). The MRB chairperson selects and manages additional MRB members. Through the appropriate division/office manager, the MRB chairperson will formally invite experienced and qualified FAA working group (WG) advisors to participate in each WG.
Acceptance to participate is considered a commitment for the duration of the project.
b. Notification of MRB Composition. The MRB chairperson will provide formal written notification to AFS-302 of the MRB board composition. Refer to Figure 4-1. The MRB chairperson will also invite AFS-302 or his or her representative, along with an invitation to the Maintenance Program Industry Group (MPIG) chairperson, to participate in the MRB process.
c. Coordination With Aircraft Certification. The FAA MRB chairperson is also responsible for coordination on all issues of concern with FAA certification within the appropriate Aircraft Certification project manager and engineering staff. This may require developing issue papers and responding to Aircraft Certification issue papers or seeking consultation on new technological issues that may arise during the design and development process of the aircraft.
d. Assignment of MRB Members. The MRB chairperson will assign an FAA MRB member to each WG. The MRB chairperson may assign additional FAA advisors to each WG if necessary. FAA WG advisors will include staff from FAA engineering/design certification branches as well as appropriate aviation safety inspectors from Flight Standards Service (AFS) having oversight of aircraft maintenance operations, and AEG personnel.
Par 4-1 Page 15
FIGURE 4-1. LETTER TO AFS-300 TO ESTABLISH AN MRB Federal Aviation Administration Memorandum Date: XXXXXXXXX To: Manager, Aircraft Maintenance Division, AFS-300 THRU: AFS-302 From: Manager, XXXX Aircraft Evaluation Group, XXX AEG Prepared by: XXXXXXXXXXX Subject: ACTION: Establishment of the Maintenance Review Board, for the The Aircraft Certification Division and Flight Standards Division, each have responsibility for specific tasks in the aircraft certification process. Within the Flight Standards Division, the Aircraft Evaluation Group (AEG) has a variety of responsibilities including: the development, acceptance and revision of the initial minimum maintenance/inspection requirements for derivative or newly-certified transport category aircraft and powerplants. These initial minimum maintenance inspection requirements are referenced in the Maintenance Review Board (MRB) Report and in part are requirements of FAR 25.1529, Appendix H. These functions are accomplished through the establishment of technical boards as provided by Order 8900.1.
Order 8900.1 sets forth responsibilities and guidelines for Flight Standards Divisions and the Aircraft Evaluation Groups in accomplishing certain Aircraft Certification and operational evaluation responsibilities. Composition and functions of the Maintenance Review Boards (MRB) are contained in Advisory Circular No. 121-22A. Other pertinent FAA policy letters.
orders, and advisory material may also apply.
The FAA aircraft certification and MRB MSG-3, analysis of the Aircraft name here, will be conducted concurrently with the EASA authorities.
We anticipate the following schedule:
• The MRB will meet in, beginning in January 2009
• The MRB MSG-3 Working Group analysis will take place between March 2009 througl September 2010.
Aircraft maintenance task validation will occur during the flight test program First aircraft deliveries should occur in September 201:
Identified below are the proposed MRB members. Please advise me if you wish to include a representative from AFS-300.
Maintenance Review Board Members:
Page 16 Par 4-1
Par 4-1 Page 17 FIGURE 4-1. LETTER TO AFS-300 TO ESTABLISH AN MRB (CONTINUED)
4-2. FOREIGN OEM/TCH.
a. MRB Chairperson for Certification of Foreign Aircraft. During the certification process of a foreign-manufactured aircraft, the applicant will formally request FAA participation from the appropriate AEG. The AEG office manager will assign a qualified FAA MRB chairperson who will perform the duties as the FAA representative on the international MRB/industry steering committee (ISC).
b. Responsibilities of FAA MRB Chairperson.
(1) This FAA MRB chairperson is the counterpart to the international MRB chairperson in all matters concerning MRB activities and MSG processes. The MRB chairperson is the sole authority regarding United States FAA requirements. The chairperson also provides the collective input from all the FAA advisors regarding WG activities. The primary duty is to ensure compliance with the applicable Title 14 of the Code of Federal Regulations (14 CFR) minimum interval/tasking requirements/FAA regulatory requirements. Also, to the extent possible, the chairperson ensures standardization and harmonization of the domestic and international MRB activities within the international MRB process.
(2) Regarding all issues of concern, the FAA MRB chairperson is also responsible for coordination with FAA certification within the appropriate Aircraft Directorate project manager and engineering staff. This may require developing issue papers and responding to certification issue papers, or seeking consultation on new technological issues that may arise during the design and development process of the aircraft.
(3) The FAA WG advisors provide assistance and guidance to WG members regarding the Policy and Procedures Handbook (PPH), latest version of MSG process, FAA policy, and regulatory requirements. The FAA advisors report directly to the FAA MRB chairperson on all matters regarding assigned WG activities, actions, results, and controversial issues.
4-3. MAINTENANCE REVIEW BOARD.
a. MRB Personnel. The MRB supports the development of an industry MRBR proposal containing the minimum scheduled interval/tasking requirements for a newly FAA type-certificated or derivative aircraft and its aircraft engines. The MRB may include qualified
FAA AFS inspector personnel, AEG personnel, and engineering representatives from the controlling FAA certification/directorate office.
b. MRB Chairperson Functions. The MRB chairperson will initiate the development of an MRB obtaining a complete schedule of all MSG process activities from the OEM/TCH. The MRB chairperson assigns MRB members or other qualified FAA personnel to work as advisors to each applicable industry WG. It is also the responsibility of the MRB chairperson to perform the functions identified in the PPH, described in Chapter 3. These include the following:
(1) Determine the number and type of qualified FAA personnel that are necessary, and assign them to their respective WG by specialty (systems, engines, avionics, structures, zonal, lighting/High Intensity Radiated Field, etc.).
(2) Provide the ISC chairperson with a list of FAA personnel names, their affiliations, assignments, and changes in personnel as they occur.
(3) Invite other regulatory authorities, in coordination with the AEG manager and the OEM/TCH, to participate in the MRB, and coordinate the activities with regulatory authorities through their representatives.
(4) Obtain letters of confirmation between the FAA and each participating regulatory authority. Refer to the template example Figure 5 Letter of Confirmation in Appendix 4.
(5) Inform the ISC chairperson of all participating regulatory authorities.
(6) Establish and maintain a file of all MRB proceedings in the MRB historical file.
(7) Establish the extent of other regulatory authority participation and assignment as WG Advisors.
(8) Keep other regulatory authorities informed regarding any changes to MRB policy and procedures before and during the MRB process.
(9) Accept the ISC-approved PPH, following a review by all participating regulatory authorities, within 30 working days of receipt.
(10) Coordinate all MRB activities and associated matters with the ISC chairperson.
(11) Ensure that the OEM/TCH provides the necessary aircraft familiarization/technical training inclusive of MSG training to all MRB members and WG advisors.
(12) Schedule the MRB meeting before attendance of ISC meetings, as required.
(13) Attend all ISC meetings and be prepared to address any previous open issues that developed during WG or ISC meetings.
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