Appendix A A-2 MRBR Maintenance Review Board Report MSG-3 Maintenance Steering Group – 3rd Task Force MSI Maintenance Significant Items MSpec Management Specification NTSB National Transportation Safety Board OEM Original Equipment Manufacturer OpSpec Operations Specification PI Principal Inspector SB Service Bulletin SFAR Special Federal Aviation Regulations STC Supplemental Type Certificate SWPM Standard Wiring Practice Manual TC Type Certificate TCH Type Certificate Holder TSB The Transportation Safety Board of Canada
Appendix B B-1 APPENDIX B. DEFINITIONS B.1 Affected Persons. For the purposes of this advisory circular (AC), operators and others required to comply with the requirements of Title 14 of the Code of Federal Regulations (14 CFR) part 25, § 25.1729; part 26, § 26.11; part 121, § 121.1111; and part 129, § 129.111.
B.2 Aircraft Maintenance Manual (AMM). A manual developed by the manufacturer of a particular airplane that contains information necessary for the continued airworthiness of that airplane.
B.3 Airworthy. An aircraft, aircraft engine, or component which conforms to its type design and is in safe condition for operation.
B.4 Component Maintenance Manual (CMM). A manual developed by a manufacturer that contains information necessary for the continued airworthiness of a particular component.
B.5 Continued Airworthiness. Certified aircraft, engines, propellers, and appliances are safe to operate for the intended purpose; they are maintained safely throughout their service life; the product meets its type design and is in a condition for safe operation.
B.6 Design Approval Holder (DAH). For the purposes of this AC, a DAH is a type certificate holder (TCH) and Supplemental Type Certificate (STC) holder.
B.7 Electrical Wiring Interconnection System (EWIS). EWIS is defined in § 25.1701(a) to mean “any wire, wiring device, or combination of these, including termination devices, installed in any area of the airplane for the purpose of transmitting electrical energy, including data and signals, between two or more intended termination points.”
Section 25.1701(a) includes a list of items that are specifically included in the definition of EWIS, and § 25.1701(b) includes a list of items that are specifically excluded from the definition of EWIS.
B.8 EWIS Certification and Operation Requirements. Part 25 subpart H contains certification and operation requirements for the airplanes’ EWIS. It requires the development of EWIS instructions for continued airworthiness (ICA) to be approved by the Federal Aviation Administration (FAA) responsible Aircraft Certification Service office (previously described as Aircraft Certification Office).
B.9 Enhanced Zonal Analysis Procedure (EZAP). A logical process for developing maintenance and inspection instructions for EWIS.
B.10 Flammable. Per 14 CFR part 1, § 1.1, “flammable, with respect to a fluid or gas, means susceptible to igniting readily or to exploding.”
B.11 Flight Standards Service (FS). Offices located in the FAA Flight Standards Service are responsible for developing guidance and policy applicable to transport category airplanes for Aircraft Evaluation Division (AED) personnel and FS personnel (Maintenance,
Appendix B B-2 Avionics, and Operations aviation safety inspectors (ASI)) in the conduct of their responsibilities.
B.12 Instructions for Continued Airworthiness (ICA). The information developed in accordance with applicable airworthiness requirements that includes the applicable inspection tasks, intervals, methods, processes, procedures, and airworthiness limitations (AL) to keep the product airworthy throughout its operational life.
B.13 Maintenance and Inspection Instructions. Information that provides for each part of the airplane and its engine auxiliary power units (APU), propellers, accessories, instruments, and equipment the recommended periods at which they should be cleaned, inspected, adjusted, tested, and lubricated, and the degree of inspection, the applicable wear tolerances, and work recommended at these periods necessary to provide for the continued airworthiness of the airplane. They also include the recommended overhaul periods and necessary cross-reference to the Airworthiness Limitations Section (ALS) of the manual.
B.14 Maintenance Implementation Document (MID). A document developed by one aircraft manufacturer that contains a comprehensive list of all EWIS and fuel tank safety (FTS) ICA which will satisfy the requirements contained in the Enhanced Airworthiness Program for Airplane Systems/Fuel Tank Safety (EAPAS/FTS) operational rules.
B.15 Maintenance Planning Data. Data developed by the manufacturer of a particular airplane which contain the information each operator of that airplane needs to develop a customized, scheduled maintenance program.
B.16 Maintenance Review Board Report (MRBR). Intended for air carriers, a report which contains the initial minimum scheduled maintenance and inspection requirements for a particular transport category airplane and on-wing engine program. Air carriers may use those provisions—along with other maintenance information contained in the ICA—in the development of their maintenance programs.
B.17 Maintenance Steering Group – 3rd Task Force (MSG-3). A voluntary structured process developed by the industry and maintained by Airlines for America (A4A) to make decisions used to develop maintenance and inspection tasks and intervals for an airplane.
B.18 Products. Certified aircraft, engines, propellers, and appliances.
B.19 Representative Airplane’s EWIS. For the purposes of the EAPAS/FTS Rule, the “representative airplane’s” EWIS is the configuration of each model series airplane that incorporates all variations of the EWIS used in production on that series airplane and all TCH-designed modifications mandated by Airworthiness Directive (AD) as of the effective date of the rule.
Appendix B B-3 B.20 Responsible Aircraft Certification Service Office. The responsible Aircraft Certification Service office having oversight responsibility for the relevant type certificate (TC) or STC, as determined by the Administrator.
B.21 STC-Developed EWIS ICA. STC holders may use the Maintenance Review Board (MRB) process or any other process they choose. Regardless of the process used, the end result must be ICA that include the applicable inspection tasks, intervals, methods, processes, and procedures to keep the EWIS airworthy throughout its operational life.
B.22 STC EWIS ICA. The inspections and procedures to keep an alteration affecting the EWIS approved under an STC airworthy throughout its operational life.
B.23 TCH EWIS ICA. The inspections and procedures to keep the EWIS airworthy throughout its operational life.
B.24 TCH Original EWIS ICA. The result of the MRB process. During this process, TCH-developed Maintenance Significant Items (MSI) are subjected to maintenance program development logic, such as in MSG-3 or later revisions. The result is an ICA that includes the applicable inspection tasks, intervals, methods, processes, and procedures to keep the EWIS airworthy throughout its operational life.
Appendix C C-1 APPENDIX C. CONTACT INFORMATION FOR QUESTIONS REGARDING
RESPONSIBLE AIRCRAFT CERTIFICATION SERVICE OFFICES C.1 For questions concerning Aircraft Certification Service (AIR) offices, contact Suzanne Masterson, Product Policy Management: Transport Airplanes and Engines Section (AIR-62A), Aircraft Certification Service, Federal Aviation Administration, 2200 South 216th St., Des Moines, WA 98189; telephone: 206-231-3211 or 425-227-1855; email: suzanne.masterson@faa.gov.
Advisory Circular Feedback Form If you find an error in this AC, have recommendations for improving it, or have suggestions for new items/subjects to be added, you may let us know by contacting the Flight Standards Directives Management Officer at 9-AWA-AFB-120-Directives@faa.gov.
Subject: AC 120-102B, Incorporation of Electrical Wiring Interconnection Systems Instructions for Continued Airworthiness into an Operator’s Maintenance Program Date: _____________________ Please check all appropriate line items:
An e rror ( proc edural or typographical) has been noted in paragraph ____________ on page _______.
Recommend paragraph _____________ on page __________ be changed as follows:
______________________________________________________________________ ______________________________________________________________________ In a future change to this AC, please cover the following subject:
(Briefly describe what you want added.)
______________________________________________________________________ ______________________________________________________________________ Other comments:
______________________________________________________________________ ______________________________________________________________________ I would like to discuss the above. Please contact me.
Submitted by: Date: ______________________