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By Anthony Affissio
Anyone moving dangerous goods by air to, through or from the United States quickly discovers that compliance involves more than simply applying the IATA Dangerous Goods Regulations. Given the scale of United States air freight activity, differences between the United States regulatory framework and the international regulations have a global impact. Understanding those differences is just as important as understanding the regulations themselves.
I remember attending my first dangerous goods training course with Lufthansa in Seeheim, Germany, during the early 1990s. I was the only American in a class of around twenty students from all corners of the world. The course ran for more than a week, with an entire day devoted solely to the United States State Variations.
For many of the international participants, that session introduced an entirely new layer of complexity. Because only a small proportion of their shipments involved the United States, they effectively had to learn a second set of operating rules alongside the IATA Dangerous Goods Regulations. For those of us working in the United States, those additional requirements were simply part of everyday operations.
That experience has stayed with me because it demonstrated just how different the United States dangerous goods framework is from that of most other States. Understanding why those differences exist is just as important as understanding what the variations say.
The Largest Collection of State Variations
A review of Section 2.8.1 of the 67th Edition of the IATA Dangerous Goods Regulations immediately highlights the scale of the United States State Variations.
Identified as the USG Variations, they begin at the bottom of page 64 and continue through to page 71, making them by far the most extensive State Variations published within the IATA Dangerous Goods Regulations.
Before the first variation even begins, an editorial note introduces five terms used throughout the USG entries.
The first is “Hazardous Materials”, the terminology used within Title 49 of the United States Code of Federal Regulations (49 CFR). In practical terms, Hazardous Materials is simply the United States regulatory equivalent of what most of the international industry knows as Dangerous Goods.
USG 01 begins on page 65, while the final variation, USG 18, appears toward the end of page 71. No other State publishes anywhere near as many variations, and no other State occupies more than a single page in this section. That alone signals that transporting dangerous goods to, through or from the United States can involve additional layers of complexity that may not exist elsewhere.
Two Competent Authorities, One Regulatory Environment
The complexity becomes even clearer when reviewing Appendix D.1 of the IATA Dangerous Goods Regulations, which identifies the Competent Authorities responsible for dangerous goods.
The United States is unique because it identifies two separate authorities.
The Pipeline and Hazardous Materials Safety Administration (PHMSA) is listed as the Regulatory Branch.
The Federal Aviation Administration (FAA) is listed as the Enforcement Branch.
This distinction reflects the way dangerous goods regulation is organised within the United States.
Unlike many countries where the civil aviation authority develops and enforces dangerous goods requirements, responsibility within the United States Department of Transportation is divided across several administrations.
PHMSA is responsible for developing and maintaining the Hazardous Materials Regulations contained within 49 CFR, while the FAA oversees aviation safety and enforcement activities affecting the transport of dangerous goods by air.
Although both organisations operate within the United States Department of Transportation, they perform different regulatory functions that together shape the United States dangerous goods framework.
Why the PHMSA and FAA Relationship Matters
Each United States transportation administration carries its own compliance and enforcement responsibilities under 49 CFR.
The FAA also exercises authority under Title 14 of the Code of Federal Regulations, which governs aviation operations.
Within the FAA, dangerous goods compliance responsibilities are undertaken by the Office of Hazardous Materials Safety (AXH), operating within Security and Hazardous Materials Safety.
That organisational structure has evolved over many years and reflects the specialised nature of hazardous materials oversight within the FAA.
For industry, the practical implication is straightforward.
The United States dangerous goods framework cannot be fully understood by reading the USG Variations in isolation. Those variations sit within a broader regulatory environment involving PHMSA, the FAA, 49 CFR, Title 14 CFR, and the way the United States Department of Transportation divides regulatory and enforcement responsibilities.
What This Means for International Dangerous Goods Movements
For shippers, freight forwarders, airlines, ground handlers and other supply chain participants, the United States deserves particularly careful attention.
The volume of USG Variations is one indication of complexity. The dual Competent Authority structure is another.
Together, they demonstrate that dangerous goods movements involving the United States can involve additional regulatory and enforcement considerations that may not arise elsewhere.
This does not mean the United States framework is unusually difficult. Rather, it reflects a regulatory system that has developed differently from those adopted in many other jurisdictions.
Businesses moving dangerous goods to, through or from the United States should therefore seek to understand not only the wording of the USG Variations themselves, but also the regulatory architecture that supports them.
Final Reflection
The United States State Variations are far more than an extensive list of additional national requirements. They provide insight into a sophisticated regulatory framework built around separate regulatory and enforcement responsibilities.
The relationship between PHMSA, AXH and the broader FAA continues to evolve and remains worthy of close attention, particularly as organisational changes within the United States Government continue to shape regulatory administration.
For organisations involved in international dangerous goods transport, developing a deeper understanding of that regulatory structure can strengthen compliance, improve operational decision making and reduce regulatory risk when transporting dangerous goods to, through or from the United States.