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Number Office Title Date
120-73 ANM-100 Damage Tolerance Assessment of Repairs to Pressurized Fuselages Provides guidance to operators of certain transport category airplanes operated under 14 CFR Parts 91, 121, 125, and 129. The guidance provides an acceptable means of compliance with the regulations that require incorporating FAA-approved “repair assessment guidelines” into an operator’s FAA-approved maintenance or inspection program. The means of compliance described is intended to provide guidance to supplement the engineering and operational judgment that must form the basis of any compliance findings relative to repair assessments for pressurized fuselages. 12-14-2000
120-93 ANM-100 Damage Tolerance Inspections for Repairs and Alterations This advisory circular (AC) provides guidance material for Type Certificate (TC) Holders, Supplemental Type Certificate (STC) Holders, and operators to comply with requirements in the Aging Airplane Safety Act to ensure the airworthiness of aging airplane parts and components. The Aging Airplane Safety Rule that supports the Act specifies incorporating damage tolerance-based inspections into an operator’s continuous airworthiness maintenance program. These inspections will help ensure the integrity of fatigue critical structure on transport category airplanes operated in air transportation. This guidance will provide persons who have developed repairs and alterations with a means to develop damage tolerance data to be used to determine damage tolerance inspections for repairs and alterations that affect fatigue critical structure. This AC will give guidance on developing compliance documents, schedules and plans that will assist in developing and incorporating damage tolerance inspections into maintenance programs of certain transport category airplanes with respect to repairs and alterations. 11-20-2007
120-94 ANM-100 Aircraft Electrical Wiring Interconnection Systems Training Program 11-20-1997
120-104 ANM-100 Establishing and Implementing Limit of Validity to Prevent Widespread Fatigue Damage

This advisory circular (AC)offers guidance on compliance with Title 14 Code of Federal Regulations (14 CFR) 26.21, 26.23, 121.1115, and 129.115.  It tells design approval holders of transport category airplanes how to establish a limit of validity of the engineering data that supports the structural maintenance program (hereafter referred to as LOV) for those airplanes. It also tells design approval holders how to address maintenance actions that have been determined necessary to support an LOV.  It tells operators of those airplanes how to incorporate the LOV into their maintenance programs.  Finally, this AC provides guidance to anyone wishing to extend an LOV.  Guidance for establishing an LOV for airplanes whose type certificate was applied for after (XXXX) is contained in AC 25.571-1X.  Guidance for extending an LOV approved under § 25.571, § 26.21, or § 26.23 can be found here.  The actions described in this AC are meant to prevent widespread fatigue damage (WFD) in the transport airplane fleet up to the LOV. 

120-26L AJR-2 Assignment of Aircraft Call Signs and Associated Telephones This Advisory Circular describes the requirements and procedures for the assignment and authorization for use of aircraft call signs in the National Airspace System (NAS), specifically, International Civil Aviation Organization (ICAO) three-letter designators (3LD), U.S. special designators, and local designators, and their associated telephonies. Guidance is provided to aircraft operators for requesting call signs and explains the assignment and the authorization process for their use domestically within the NAS and internationally. 08-25-2016
120-12A AFS-820 Private Carriage Versus Common Carriage of Persons or Property Furnishes FAA personal and interested segments of industry with general guidelines for determining whether current or proposed transportation operations by air constitute private or common carriage. 04-24-1986
120-105A AFS-410 Foreign Terminal Instrument Procedures (FTIP) Acceptance/Review

This advisory circular (AC) establishes guidelines for U.S. operators to use when reviewing Foreign Terminal Instrument Procedures (FTIP). Occasionally, the author uses the word "must" or similar language when he deems the desired actions critical. The Federal Aviation Administration (FAA) does not intend for the use of such language to add to, interpret, or relieve a duty imposed by Title 14 of the Code of Federal Regulations (14 CFR).

120-28D AFS-400 Criteria for Approval of Category III Weather Minima for Takeoff, Landing, and Rollout States an acceptable means, not the only means, for obtaining approval of Category III Landing Weather Minima and low visibility takeoff, including the installation and approval of associated aircraft systems. 07-13-1999
120-29A AFS-400 Criteria for Approval of Category I and Category II Weather Minima for Approach This AC provides an acceptable means, but not the only means, for obtaining and maintaining approval of CAT I & II Weather Minima including the installation and approval of associated aircraft systems. 08-12-2002
120-33 AFS-400 Operational Approval of Airborne Long-Range Navigation Systems for Flight within the North Atlantic Minimum Navigation Performance Specifications Airspace Sets forth acceptable means, but not the only means, for operators certificated under FAR Parts 121 and 123 and operators utilizing large aircraft under FAR 135.2, to obtain approval to operate within a specific airspace over the NAT (North Atlantic) MNPS (Minimum Navigation Performance Specifications) airspace after 0001 Greenwich Mean Time, Dec. 29, 1977. 06-24-1977
120-41 AFS-400 Criteria for Operational Approval of Airborne Wind Shear Alerting and Flight Guidance Establishes an acceptable means, but not the only means, of obtaining operational approval of an airborne wind shear alerting and flight guidance system. It describes acceptable simulation test criteria, wind field modeling data, and minimum performance parameters for evaluating candidate systems. 11-07-1983
120-55C AFS-400 Air Carrier Operational Approval and Use of TCAS II

 This advisory circular (AC) provides an acceptable, but not the only, means to address Traffic Alert and Collision Avoidance System (TCAS) issues related to installation and use of TCAS II regarding compliance with Title 14 of the Code of Federal Regulations (14 CFR) parts 121, 125, and 129 requirements for air carriers.

120-57A AFS-400 Surface Movement Guidance and Control System Describes the standards and provides guidance in the development of a Surface Movement Guidance and Control System (SMGCS) plan for U.S. airports where scheduled air carriers are authorized to conduct operations when the visibility is less than 1,200 feet runway visual range. 12-19-1996
120-70C AFS-400 Operational Authorization Process for Use of Data Link Communication System

This advisory circular (AC) applies to all operators conducting data link operations and presents various methods for all air operators using data link systems to meet Federal Aviation Administration (FAA) and International Civil Aviation Organization (ICAO) Standards, to include as well-recommended practices. The AC introduces U.S. domestic Controller-Pilot Data Link Communication Departure Clearances (CPDLC-DCL) and the European LINK 2000+ CPDLC program. This revision also incorporates an expanded description of event reporting and defines the roles and responsibilities during the authorization process. It provides operational approval information for operators conducting operations under Title 14 of the Code of Federal Regulations (14 CFR) parts 91, 91 subpart K (part 91K), 121, 125, 129, 133, and 135. For complete airworthiness guidance for new aircraft and systems, refer to the current edition of AC 20-140, Guidelines for Design Approval of Aircraft Data Communications Systems Supporting Air Traffic Services (ATS). Authorizations to conduct data link operations approved under previous versions of AC 120-70 do not require further evaluation.

120-76C AFS-400 Guidelines for the Certification, Airworthiness, and Operational Use of Electronic Flight Bags

This joint Flight Standards Service (AFS) and Aircraft Certification Service (AIR) advisory circular (AC) contains guidance on the operational use of Electronic Flight Bags (EFBs). It is intended for all operators conducting flight operations under Title 14 of the Code of Federal Regulations (14 CFR) part 121, 125, 135, or 91 subpart F (part 91F) and part 91 subpart K (part 91K) who want to replace required paper information or utilize other select functions of an EFB. This AC sets forth an acceptable means, but not the only means, to obtain Federal Aviation Administration (FAA) authorization for the operational use of EFBs. Part 91 operators can find additional EFB information in the current edition of AC 91-78, Use of Class 1 or Class 2 Electronic Flight Bag (EFB). For guidance on the installation of EFB components, refer to the current edition of AC 20-173, Installation of Electronic Flight Bag Components.

120-91 AFS-400 Airport Obstacle Analysis Describes acceptable methods and guidelines for developing takeoff and initial climb-out airport obstacle analyses and in-flight procedures to comply with the intent of the regulatory requirements of Title 14 of the Code of Federal Regulations part 121,§§ 121.177, 121.189, and part 135, §§ 135.367, 135.379 and powered airplanes operated under parts 121 and 135 05-05-2006
120-108 AFS-400 Continuous Descent Final Approach

This advisory circular provides guidance for all operators using the continuous descent final approach (CDFA)technique while conducting a nonprecision Approach (NPA) procedure. It describes the rationale for using the CDFA Technique, as well as recommended general procedures and training.

120-39 AFS-331 Hazards of Waste Water Ice Accumulation Separating from Aircraft in Flight This advisory circular emphasizes the potential hazards to life and property due to lavatory fluid and potable water systems’ ice accumulation and resultant separation from aircraft in flight. 10-31-1980
120-17A AFS-330 Maintenance Control by Reliability Methods Provides information and guidance materials which may be used to design or develop maintenance reliability programs utilizing reliability control methods. 03-27-1978
120-84 AFS-309 Aging Aircraft Inspections and Records Reviews

This advisory circular (AC) provides guidance pertaining to aging aircraft inspections and records reviews accomplished to satisfy the requirements of the Aging Aircraft Safety Final Rule. This information represents an acceptable way, but not the only way, for an aging airplane inspection and records review to be conducted. However, if you use the means described in this AC, you must follow it in all important aspects.


Change 1 dated 01/15/2009

120-16G AFS-300 Air Carrier Maintenance Programs

This advisory circular (AC) explains what the term “maintenance program” means. Our explanation describes the scope and content of air carrier aircraft maintenance programs. This is important as there is a significant difference between an air carrier maintenance program and an inspection program used in non-air carrier maintenance operations. We explain the background of these programs as well as the Federal Aviation Administration’s (FAA) regulatory requirements. We also describe and explain each of the 10 elements of air carrier maintenance programs. When we use “must” or “will” in this AC, we are referencing actual regulatory requirements. When we use “we,” “us,” or “our” in this AC, we mean the FAA. When we use “you,” “your,” or “yours,” we mean you, the air carrier. When we use the term “person,” it has the same meaning as that in Title 14 of the Code of Federal Regulations (14 CFR) part 1, § 1.1.

120-72 AFS-300 Maintenance Resource Management Training Presents guidelines for developing, implementing, reinforcing, and accessing Maintenance Resources Management Training Programs for improving communication effectiveness, and safety in maintenance operations. 09-28-2000
120-77 AFS-300 Maintenance and Alteration Data This advisory circular (AC) provides one means, but not the only means, of ensuring that the contemplated maintenance, alteration, or continue-in-service condition is in compliance with applicable regulations and existing policy. 10-07-2002
120-85A AFS-300 Air Cargo Operations

This advisory circular (AC) provides operators with recommended procedures for managing cargo operations. Developing and using these comprehensive procedures is key to establishing a safe and efficient cargo operation. The AC provides guidance for aircraft cargo loading systems (CLS), restraints, special cargo, and unit load devices (ULD)This AC is not mandatory and does not constitute a regulation. This AC describes an acceptable means, but not the only means, of complying with applicable regulations to manage cargo operations.

  • The terms must and will are used in this AC to reflect regulatory requirements.
  • When this AC uses suggestive and permissive language (e.g., should and may), it is used to describe recommended or acceptable means, but not the only means, to comply with this AC.
120-97A AFS-300 Incorporation of Fuel Tank System Instructions for Continued Airworthiness into Operator Maintenance or Inspection Programs

On May 7, 2001, the Transport Airplane Fuel Tank System Design Review, Flammability Reduction and Maintenance and Inspection Requirements final rule was published in the Federal Register (FR). It has since been referred to as the 2001 Fuel Tank Safety (FTS) rule. It adopted amendments to part 25, Special Federal Aviation Regulation (SFAR) 88 and operating requirements related to SFAR 88. The operating requirements included requirements to implement instructions for continued airworthiness (ICA) that design approval holders (DAH) developed in compliance with SFAR 88. On November 8, 2007, the Federal Aviation Administration (FAA) published the Enhanced Airworthiness Program for Airplane Systems (EAPAS)/FTS final rule. The purpose of the rule is to help ensure the continued safety of transport category airplanes by improving the design, installation, and maintenance of electrical wiring systems. The EAPAS/FTS rule amended the operating requirements to implement FTS actions developed in accordance with SFAR 88. Integrating the incorporation of the fuel tank system and electrical wiring interconnection system (EWIS) requirements helps to ensure compatibility and to eliminate duplication. Additionally, the EAPAS/FTS rule redesignates (replaces) Title 14 of the Code of Federal Regulations (14 CFR) part 91, § 91.410(b); part 121, § 121.370(b); part 125, § 125.248(b); and part 129, § 129.32(b) of the FTS rule. The new sections are §§ 91.1507, 121.1113, 125.507 and 129.113. These new rules also clarify language with reference to the approval process of the operator’s program. This advisory circular (AC) only addresses the fuel tank system safety requirements and describes acceptable means of compliance (AMC) accordingly. The current edition of AC 120-102, Incorporation of Electrical Wiring Interconnection Systems Instructions for Continued Airworthiness into an Operator’s Maintenance Program, addresses EWIS requirements in the EAPAS/FTS rule.


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