You did everything right. The proper shipping name is correct. The UN number is right. The packaging is UN-spec. The labels and marks are square and legible. The shipper’s declaration is signed. And the airline still refuses the shipment at the cargo door.
This is the moment most shippers learn — too late — that IATA compliance is only half the conversation. The other half is State Variations and Operator Variations: country-specific and airline-specific rules that sit on top of the IATA Dangerous Goods Regulations and quietly veto otherwise-compliant shipments at the airport. With the 67th Edition of the IATA DGR effective January 1, 2026 (and Addendum I already released the same day), the variation landscape just shifted again, and shippers who haven’t updated their playbook are walking into rejection.
What “State Variations” and “Operator Variations” actually are
State Variations (the “G” series — USG, CAG, FRG, UKG, etc.) are deviations from the standard IATA rules imposed by national civil aviation authorities. They can be stricter than IATA, looser, or simply different. The U.S. has dozens (USG-01 through USG-22 and beyond). France and the U.K. submitted significant changes for 2026, and Thailand entered new submissions to the IATA DGR for the first time in this edition.
Operator Variations (the “OA-series” — OA-01, FX-08, UA-12, etc.) are airline-specific rules. Each carrier publishes its own. They can prohibit certain UN numbers entirely on certain lanes, require additional documentation, or impose stricter packaging instructions than IATA defaults.
The key idea: every shipment must satisfy IATA + the State of Origin + the State of Destination + every Operator that touches it. The strictest rule wins, every time.
The 2026 changes most likely to trip you up
30% State-of-Charge is now mandatory
The 30% State-of-Charge limit for lithium-ion batteries shipped alone (UN 3480, Packing Instruction 965) is no longer a recommendation — it is a hard requirement in the 67th Edition. PI 966 lithium-ion packed with equipment, where individual cells exceed 2.7 Wh, is also capped at 30% SoC. Higher SoC requires approval under Special Provision A331 from both the State of Origin and the Operator. That means a shipper who runs a successful >30% SoC shipment on one airline cannot assume the next airline will accept it. Each operator approval stands alone.
UN 3551 sodium-ion batteries — operator bans are emerging
The IMDG Amendment 42-24 introduced sodium-ion battery UN numbers (UN 3551/3552), and the 67th IATA DGR has parallel provisions. But UPS has already published an operator variation prohibiting UN 3551 to, from, or within Europe. Other carriers are following. A “new” UN number does not mean every operator accepts it yet.
UN 3166 now distinguishes hybrid vehicles
The 2026 edition amends UN 3166 to add a “hybrid” category for vehicles powered by both flammable gas and flammable liquid. This is small in the regulation text and large in practice — auto-parts shippers and vehicle exporters who used to default to UN 3166 need to verify whether the hybrid designation applies and adjust documentation accordingly.
Power bank rules for passengers — and the cargo ripple
The 2026 passenger rules now prohibit charging power banks from in-seat outlets during taxi, takeoff, and landing, and require them to be stored under the seat rather than in the overhead bin. This is a passenger rule, but operator variations are tightening cargo handling of power banks (Class 9, UN 3480 in PI 965) in parallel. Expect more scrutiny on packaging marks and shipper’s declarations for any consignment containing loose power banks.
The five rejection causes that haven’t changed — and still account for most refusals
- Misspelled or incorrect Proper Shipping Name. “Lithium ion batteries” is not the same as “Lithium ion battery” in regulatory eyes. The PSN must match the table exactly.
- Missing “UN” prefix on UN numbers. “3480” is incomplete. It must be “UN 3480.”
- Wrong net quantity or package count. Especially common on multi-package consignments where the net weight on the declaration doesn’t match the marks on the box.
- Inadequate or non-UN packaging. Using a 4G fiberboard box without the UN spec mark, or with an expired specification, kills the shipment at acceptance.
- Missing or incorrect hazard labels. The wrong orientation, wrong dimensions, or a Cargo Aircraft Only label missing from a CAO-only shipment will all be caught at the counter.
How to actually work with State and Operator Variations
- Build the lane before you build the shipment. Identify the origin country, destination country, and every operator in the routing — including ground handlers and any interline carriers. The strictest applicable rule defines your shipment.
- Read the operator variation library, not just the IATA book. Every major airline publishes its variations in PDF form (UPS, FedEx, DHL, the major passenger carriers). They update without notice. Last quarter’s playbook is not this quarter’s playbook.
- Treat A331 approvals as lane-specific. A higher-than-30% SoC approval from one operator is not portable. Each new airline = a new approval.
- Train your packer to read the variation table. Most rejections happen because the person assembling the box never saw the airline-specific rule. Either centralize hazmat packing with a trained team or build a structured checklist into the shipping software.
- Verify packaging UN marks every single time. Spec marks expire. Suppliers substitute boxes. The box that worked last quarter may not be the box you have in stock today.
The role of a hazmat compliance partner in 2026
The 67th Edition is the third consecutive year of substantive lithium-battery tightening. State and Operator Variations now read like a moving target — Thailand newly entering, France and the U.K. updating, several U.S. carriers re-issuing prohibited-item lists. For shippers who move dangerous goods regularly but don’t have a full-time DG specialist on staff, the math now favors a compliance partner: faster certification, lower rejection rate, fewer Cargo Aircraft Only restrictions per shipment, and audit-ready records when the FAA shows up.
Mobile hazmat compliance with Go-Freight
Go-Freight’s mobile hazmat compliance team certifies IATA and IMDG shipments throughout South Florida, on-site at our warehouse or yours. We carry current operator variation libraries for every major carrier serving MIA and FLL, run A331 approval workflows for high-SoC lithium shipments, and audit your packaging, marks, and declarations against the 2026 67th Edition before the freight ever leaves your dock. Contact us to set up a compliance review before your next dangerous goods shipment moves.