14 CFR Part 139 establishes certification requirements and minimum operating standards for civil airports, ensuring safety and compliance with FAA regulations.

Purpose and Scope of Part 139
The primary purpose of 14 CFR Part 139 is to establish a comprehensive set of standards governing airports that serve scheduled air carrier operations with aircraft possessing more than nine passenger seats. This regulation aims to enhance aviation safety by ensuring these airports maintain robust safety management systems and adhere to stringent operational guidelines.
The scope of Part 139 extends to the certification and ongoing operation of these airports, encompassing airfield maintenance, wildlife hazard management, and security protocols. It dictates the requirements for an Airport Operating Certificate (AOC) and outlines the responsibilities of the certificate holder. Compliance with Part 139 is crucial for airports intending to support commercial passenger service, directly impacting the safety and efficiency of air travel within the United States.
Applicability: Which Airports are Affected?
14 CFR Part 139 specifically applies to airports engaged in scheduled passenger-carrying operations utilizing aircraft with more than nine seats. This encompasses a wide range of civil airports, from large international hubs to regional facilities, that support commercial air carrier service. Airports not serving this type of operation generally aren’t subject to Part 139 certification requirements.
However, even airports not required to be certified may voluntarily operate in accordance with Part 139 standards to demonstrate a commitment to safety; The FAA issues Airport Operating Certificates to those airports meeting the stringent criteria outlined in the regulation. It’s important to note that the applicability can also be influenced by specific lease agreements or TSA directives, potentially extending requirements to certain facilities.

Key Definitions in Part 139
Understanding key terms like “air carrier,” “airport operating certificate,” and “certificate holder” is crucial for interpreting and complying with Part 139 regulations.
“Air Carrier” Definition
Within the context of 14 CFR Part 139, the definition of an “air carrier” is pivotal in determining which airports fall under the regulation’s purview. Specifically, Part 139 applies to airports serving scheduled passenger operations conducted by air carriers utilizing aircraft with more than nine seats.
This threshold is significant; airports primarily serving general aviation or smaller commuter operations may not be subject to the full certification requirements. The FAA meticulously defines “air carrier” to encompass those operators engaged in the regular, scheduled transport of passengers for compensation or hire. Understanding this definition is fundamental for airport operators to ascertain their obligations under Part 139 and ensure appropriate safety measures are in place to accommodate these specific types of operations.
“Airport Operating Certificate” Explained
The Airport Operating Certificate (AOC) is the cornerstone of 14 CFR Part 139 compliance, representing FAA authorization for an airport to serve specific air carrier operations. This certificate isn’t simply a formality; it signifies that the airport meets stringent safety standards outlined in the regulations.
To obtain an AOC, airports must demonstrate adherence to detailed operational and maintenance protocols, including airfield maintenance, wildlife hazard management, and security measures. The FAA conducts thorough inspections and evaluations to verify compliance before issuing the certificate. Renewal is contingent upon continued adherence to these standards, ensuring ongoing safety. Holding an AOC is crucial for airports intending to accommodate scheduled passenger service by air carriers operating aircraft with more than nine seats.
“Certificate Holder” Responsibilities
The “Certificate Holder,” typically the airport operator, bears significant responsibility under 14 CFR Part 139. This extends beyond simply having the Airport Operating Certificate; it demands continuous adherence to all regulations and a proactive safety culture. Holders must develop, implement, and maintain an Airport Certification Manual (ACM) detailing operational procedures and safety protocols.
Crucially, certificate holders are now required to establish and maintain a comprehensive Airport Safety Management System (SMS), documenting compliance with 139.402. Annual updates to the SMS, provided to the FAA, demonstrate ongoing commitment to safety. Furthermore, the holder is accountable for reporting all accidents and incidents, ensuring transparency and facilitating continuous improvement in airport safety practices.

Airport Certification Process
The FAA certifies airports through application, inspection, and evaluation, ultimately issuing or renewing Airport Operating Certificates for compliant facilities.
Application for Airport Certification
Initiating the certification journey requires a formal application submitted to the FAA, detailing the airport’s operational capabilities and commitment to Part 139 compliance. This comprehensive application must include a detailed Airport Certification Manual (ACM), serving as the cornerstone of the certification process.
The ACM outlines all safety and operational procedures, demonstrating how the airport will adhere to the stringent standards outlined in 14 CFR Part 139. It encompasses everything from airfield maintenance and wildlife hazard management to security protocols and emergency response plans.
A complete application also necessitates detailed maps of the airfield layout, including runways, taxiways, and other critical infrastructure. The FAA meticulously reviews this documentation to assess the airport’s preparedness and ability to safely accommodate air carrier operations. Accurate and thorough documentation is paramount for a successful application.
FAA Inspection and Evaluation
Following the application submission, the FAA conducts a rigorous on-site inspection and evaluation of the airport’s facilities and operational procedures. This comprehensive assessment verifies the accuracy of the information presented in the Airport Certification Manual (ACM) and confirms actual compliance with Part 139 standards.
FAA inspectors meticulously examine all aspects of airport operations, including airfield maintenance, safety procedures, security protocols, and recordkeeping practices. They assess whether the airport’s physical infrastructure meets the required standards and if personnel are adequately trained to perform their duties safely and effectively.
Any discrepancies or deficiencies identified during the inspection are documented, and the airport is given an opportunity to address them. The FAA’s evaluation determines whether the airport is prepared to receive an Airport Operating Certificate.
Issuance and Renewal of Airport Operating Certificates
Upon successful completion of the FAA inspection and verification of full compliance with 14 CFR Part 139, the FAA issues an Airport Operating Certificate (AOC). This certificate authorizes the airport to serve air carriers operating under specific regulations, primarily those with aircraft containing more than nine passenger seats.
The AOC is not a one-time grant; it requires periodic renewal. Airports must demonstrate continued compliance through regular inspections and updates to their Airport Certification Manual (ACM). The renewal process ensures ongoing adherence to safety and operational standards.
The FAA may conduct follow-up inspections to verify continued compliance. Failure to maintain standards can lead to certificate suspension or revocation, impacting the airport’s ability to serve certain air carriers.

Airport Safety Management System (SMS)
Part 139 requires certificate holders to develop, implement, maintain, and adhere to a comprehensive Airport Safety Management System for proactive hazard identification.
SMS Requirements under Part 139.402
Part 139.402 outlines specific requirements for an Airport Safety Management System (SMS). Certificate holders must detail their SMS compliance either within a dedicated section of their Airport Certification Manual, clearly titled “Airport Safety Management System,” or through a separate, stand-alone SMS Manual.
If opting for a separate manual, the Airport Certification Manual must incorporate it by reference. Crucially, certificate holders are obligated to provide the FAA with copies of any changes made to the SMS Manual annually, or whenever the FAA specifically requests them. This ensures the FAA remains informed of the airport’s evolving safety protocols and procedures.
This ongoing review process is vital for maintaining a robust and effective SMS, ultimately enhancing airport safety and operational efficiency. Regular updates demonstrate a commitment to continuous improvement and proactive risk management.
Integrating SMS into the Airport Certification Manual
Successfully integrating an SMS into the Airport Certification Manual (ACM) is paramount for Part 139 compliance. Airports can choose to dedicate a distinct section within the ACM, explicitly labeled “Airport Safety Management System,” to comprehensively document their SMS. This approach centralizes safety information alongside other operational procedures.
Alternatively, a separate SMS Manual is permissible, but the ACM must clearly reference this external document, establishing a formal link. Regardless of the chosen method, the ACM must accurately reflect the SMS’s structure, processes, and responsibilities.

This integration demonstrates a holistic approach to safety, embedding it within the airport’s core operational framework and facilitating effective oversight by both the airport operator and the FAA.
Annual Updates and FAA Review of SMS
Part 139 mandates certificate holders to provide the FAA with copies of any changes made to their Airport Safety Management System (SMS) Manual on an annual basis, or whenever the FAA specifically requests them. This requirement ensures the FAA remains informed of the airport’s evolving safety practices and risk mitigation strategies.
These updates aren’t merely procedural; they demonstrate a commitment to continuous improvement and proactive safety management. The FAA’s review of these updates allows for verification of ongoing compliance with Part 139.402 and provides an opportunity for constructive feedback.
Consistent, thorough updates and transparent communication with the FAA are crucial for maintaining a robust and effective SMS.

Operational Standards – Airfield Maintenance
Part 139 dictates stringent standards for pavement upkeep, runway/taxiway markings, and lighting, guaranteeing safe airfield conditions for all air carrier operations.
Pavement Maintenance and Repair
Under 14 CFR Part 139, a robust pavement maintenance and repair program is crucial for airport certification. This program must encompass regular inspections to identify deterioration, including cracking, spalling, and foreign object debris (FOD).
Certificate holders are responsible for promptly repairing any deficiencies that compromise the structural integrity or safety of the pavement. Repair methods must adhere to FAA advisory circulars and industry best practices. Detailed records of all inspections, maintenance activities, and repairs are mandatory, demonstrating ongoing compliance.
The program should also address preventative maintenance, such as sealcoating, to extend pavement life and minimize future repair needs. Effective pavement management directly contributes to safe aircraft operations and prevents costly disruptions.
Runway and Taxiway Markings and Lighting
14 CFR Part 139 mandates precise and consistently maintained runway and taxiway markings and lighting systems. These elements are vital for pilots during all weather conditions, particularly low visibility. Markings must conform strictly to FAA standards outlined in Advisory Circulars, ensuring clear guidance for aircraft navigation.
Regular inspections are required to identify faded, damaged, or missing markings, with prompt corrective action necessary. Lighting systems, including runway edge lights, centerline lights, and approach lighting, must be fully operational and maintained according to prescribed schedules.
Detailed records of inspections, maintenance, and any discrepancies are essential for demonstrating compliance. Proper illumination and clear markings are fundamental to airport safety and efficient operations.

Operational Standards – Wildlife Hazard Management
Part 139 requires airports to assess and mitigate wildlife hazards, developing comprehensive plans to minimize bird and animal strikes to aircraft.
Wildlife Hazard Assessment
A thorough Wildlife Hazard Assessment is a foundational element of an airport’s Wildlife Hazard Management Plan, as mandated by 14 CFR Part 139. This assessment systematically identifies and evaluates wildlife species posing a risk to aircraft operations. It involves ongoing observation and data collection regarding wildlife presence, behavior, and movements within the airport environment and its vicinity.
The assessment must consider factors like habitat, food sources, and attractants that draw wildlife to the airfield. Regular site inspections, wildlife surveys, and analysis of historical strike data are crucial components. The goal is to understand the specific wildlife risks present and prioritize mitigation strategies accordingly. This assessment isn’t a one-time event; it requires continuous monitoring and updates to remain effective.
Wildlife Hazard Mitigation Plans
Following a comprehensive Wildlife Hazard Assessment, 14 CFR Part 139 requires airports to develop and implement a robust Wildlife Hazard Mitigation Plan. This plan details specific actions to minimize the risk of wildlife strikes to aircraft. Mitigation strategies can range from habitat modification – like reducing food sources or altering vegetation – to active wildlife dispersal techniques, employing trained personnel and specialized equipment.
The plan must be tailored to the specific wildlife hazards identified in the assessment and prioritize the most effective and feasible control measures. Regular monitoring of the plan’s effectiveness is essential, with adjustments made as needed. Documentation of all mitigation efforts, including dates, methods used, and observed results, is a critical component of Part 139 compliance.

Security Requirements under Part 139
Airports must comply with TSA Security Directives and maintain a comprehensive Airport Security Program (ASP) as mandated by 14 CFR Part 139.
Compliance with TSA Security Directives
Part 139 certificate holders are legally obligated to adhere to all Security Directives issued by the Transportation Security Administration (TSA). These directives, often responding to evolving threats, detail specific security measures airports must implement. Compliance isn’t merely suggested; it’s a non-negotiable requirement for maintaining certification.
Airports must establish procedures for receiving, acknowledging, and implementing these directives promptly. This includes distributing information to relevant personnel, updating the Airport Security Program (ASP) accordingly, and documenting all actions taken to ensure full compliance. Regular audits and inspections are crucial to verify adherence and identify any gaps in security protocols. Failure to comply can result in significant penalties, including certificate suspension or revocation, severely impacting airport operations and air carrier service.
Airport Security Program (ASP)
A comprehensive Airport Security Program (ASP) is a cornerstone of Part 139 compliance, detailing how an airport will address security threats and vulnerabilities. This program, developed and maintained by the certificate holder, must align with TSA regulations and be regularly updated to reflect evolving security landscapes. The ASP outlines specific procedures for access control, screening protocols, and response plans for security breaches.
It encompasses everything from perimeter security and surveillance to insider threat mitigation and cybersecurity measures. The ASP isn’t a static document; it requires continuous review, testing, and improvement. Regular training for all airport personnel is essential to ensure they understand and can effectively implement the program’s provisions. FAA inspections will scrutinize the ASP’s completeness, accuracy, and effectiveness.

Recordkeeping and Reporting Obligations
Part 139 mandates meticulous recordkeeping of safety data, inspections, and personnel training, alongside prompt reporting of accidents and incidents to the FAA.
Required Records for Part 139 Compliance
Maintaining comprehensive records is paramount for demonstrating adherence to 14 CFR Part 139. Certificate holders must meticulously document airfield inspections, including pavement condition assessments, runway and taxiway lighting checks, and navigational aid calibrations. Detailed records of all maintenance activities, repairs, and preventative measures are also essential.
Personnel training records, demonstrating competency in safety-critical areas like wildlife hazard management and emergency response, are crucial. Furthermore, accurate logs of all safety-related incidents, accidents, and hazard reports must be maintained. These records should include detailed descriptions of the event, contributing factors, and corrective actions taken.
The FAA may request these records during inspections to verify compliance, so accessibility and organization are vital. Proper recordkeeping isn’t merely a regulatory requirement; it’s a cornerstone of a proactive safety culture.
Reporting of Accidents and Incidents
Part 139 mandates prompt and accurate reporting of all accidents and incidents occurring at a certificated airport. This includes events impacting aircraft, personnel, or airport infrastructure, regardless of severity. Immediate notification to the FAA is required for accidents involving serious injury, substantial damage to aircraft, or significant operational disruptions.
Incidents, while not resulting in damage or injury, must also be reported, particularly those with the potential to compromise safety. Detailed reports should include the date, time, location, description of the event, contributing factors, and any corrective actions implemented.
Maintaining a robust reporting system fosters a proactive safety culture and allows the FAA to identify trends and implement preventative measures. Timely and thorough reporting is a critical component of Part 139 compliance.