State Variations & Operator Variations (Sections 2.8 and 2.9)

State Variations & Operator Variations (Sections 2.8 and 2.9)

International dangerous goods regulations aim for global standardization to facilitate safe, frictionless air commerce across international borders. However, international law recognizes that sovereign nations and individual air carriers maintain unique legal, statutory, geographic, and operational requirements. The IATA Dangerous Goods Regulations (DGR) captures these national and carrier-specific mandates in Section 2.8 (State Variations) and Section 2.9 (Operator Variations).

Understanding, auditing, and applying State and Operator variations is a critical skill for dangerous goods specialists. A shipment prepared flawlessly under standard DGR rules will be rejected at origin, impounded during transit, or subjected to legal penalties if it violates a notified variation.

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1. Fundamental Principle & Legal Precedence: The Rule of Maximum Strictness

The fundamental governing legal principle for all dangerous goods air transport is the Rule of Maximum Strictness.

Regulatory Precedence Hierarchy

When preparing, accepting, or transporting a hazardous shipment, dangerous goods requirements exist in a three-tier hierarchy:

$\text{Base ICAO TI / IATA DGR Standard} \longrightarrow \text{State Variations (Section 2.8)} \longrightarrow \text{Operator Variations (Section 2.9)}$

The Legal Precedence Rule

Core Legal Rule: Where a conflict or difference exists between the base IATA DGR regulations, a State Variation, and an Operator Variation, the most restrictive requirement MUST strictly take precedence.

Mathematical / Operational Precedence Matrix

• If Base DGR permits a maximum of 60 Liters net quantity per package on Cargo Aircraft Only;
• If a State Variation limits that chemical to 30 Liters net quantity per package;
• If an Operator Variation limits that chemical to 15 Liters net quantity per package;
• Legal Operational Limit: The shipment is restricted to a maximum of 15 Liters per package when carried by that operator in that state.
• Absolute Prohibitions: If any single entity in the transport chain (Origin State, Transit State, Destination State, or Operating Carrier) forbids a dangerous good, the item CANNOT be transported by that carrier or through that airspace under standard procedures.

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2. State Variations (DGR Section 2.8)

State Variations are legal mandates promulgated by government authorities of UN Contracting States and formally notified to ICAO and IATA. They apply to all air transport originating in, destined for, or transiting through the territorial airspace of the notifying state.

Coding Format & Structure

State Variations are identified by an alphanumeric code consisting of:

• 2-letter ISO Country Code (e.g., US = United States, CA = Canada, JP = Japan, DE = Germany, GB = United Kingdom, AU = Australia);
• The letter "G" (signifying Government);
• A 2-digit sequential number (e.g., USG-12, CAG-08, FRG-07).

State Variation Code Architecture: [ISO Country Code (2)] + [G] + [Number (01-99)]
Example: US + G + 12 = USG-12 (United States Government Variation 12)

Decoding trap. The three letters are the ISO country code plus G, not an English abbreviation of the country name. FRG is France (FR + G), DEG is Germany, GBG the United Kingdom, CAG Canada, JPG Japan, AUG Australia, NLG the Netherlands, BRG Brazil. Candidates lose marks every year by reading FRG as "Federal Republic of Germany." The 67th edition amends four states' variation letters to match the current ISO code, so verify the letter block in the edition you are holding.

Worked Example — USG-12 (United States, 24-Hour Emergency Response Telephone Number)

The best-known state variation in daily practice is the US emergency response telephone requirement, published as USG-12 in Subsection 2.8 and cross-referenced from DGR 8.1.6.11.

• Mandate: On shipments to, from, within, or transiting the United States, an emergency response telephone number must appear on the Shipper's Declaration for all dangerous goods for which a Shipper's Declaration is required. Magnetized material (UN 2807) and consignments needing no declaration are excluded.
• Formatting: The number must include the area code and, for numbers outside the US, the international access code or "+" sign, country code, and city code needed to complete the call from within the US.
• Monitoring: It must be monitored at all times while the goods are in transport, including storage incidental to transport, by a person who is knowledgeable about the hazards and has comprehensive emergency response and accident mitigation information — or who can immediately reach such a person.
• Third-party services: When a contracted service such as CHEMTREC is used, the contract or membership number must be shown with the number.

Worked Example — FRG-07 (France, Emergency Contact Number)

France's FRG-07 imposes a parallel requirement: a 24-hour number, with the regional code and, for numbers outside France, the country and city codes, monitored by a knowledgeable person. As of the 2026 update, FRG-07 no longer requires the emergency contact number on the package for shipments that need no transport document — an example of how a state variation is relaxed as well as tightened from year to year.

How to Read Any State Variation

Rather than memorising individual numbers, memorise the reading routine, because the numbers change between editions:

1. Look up every state in the routing (origin, transit, overflight, destination) in Subsection 2.8.
2. Read the whole variation block for that state, not just the first entry — states commonly publish 10-30 variations covering approvals, forbidden classes, documentation, marking language, and reporting.
3. Note which variations apply to the shipment (documentation, quantity, approval) and which apply only to operators registered in that state.
4. Apply the most restrictive result together with the base DGR limit.

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3. Operator Variations (DGR Section 2.9)

Operator Variations are individual airline rules published in Section 2.9. Airlines establish these rules to reflect specific fleet equipment limitations, aircraft cargo hold fire-suppression capabilities, route safety profiles, or corporate risk tolerances.

Coding Format & Structure

Operator Variations are identified by an alphanumeric code consisting of:

• 2-character IATA Airline Designator Code (alpha/numeric);
• A 2-digit sequential number (e.g., JL-11, QY-06, Q7-06).

Operator Variation Code Architecture: [IATA Airline Designator (2)] + [Number (01-99)]
Example: JL + 11 = JL-11 (Japan Airlines Variation 11)

Current Worked Examples of Operator Variations

These are real entries published by IATA in the 2026 variation updates, and they show the four typical shapes an operator variation takes:

The Four Shapes of an Operator Variation

Whatever the airline, an operator variation will do one of four things. Recognising the shape is worth more on the exam than memorising any specific code:

1. Prohibit a class, division, or UN number outright on that carrier's aircraft (e.g., no radioactive waste, no Division 2.3, no Class 1 other than 1.4S).
2. Reduce a quantity limit below the DGR maximum for a given packing instruction.
3. Add a documentation or booking requirement (advance notification, pre-approval by the carrier's dangerous goods manager, an emergency contact number in a specific box, electronic data submission).
4. Add a packaging, marking, or acceptance condition beyond the base DGR — for example, requiring standalone lithium battery consignments to be pre-approved before tender.

The Baseline Every Passenger Carrier Applies

Independently of any operator variation, standalone lithium ion batteries (UN 3480) and standalone lithium metal batteries (UN 3090) are forbidden as cargo on passenger aircraft by the DGR itself. Do not credit that prohibition to an operator variation — it is a base regulation, and Section 4.2 shows "Forbidden" in the passenger columns for those entries.

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4. Comparison Matrix: State Variations vs. Operator Variations

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5. Systematic 4-Step Variation Audit Workflow

Dangerous goods specialists must execute a rigorous 4-step audit before tendering or accepting any consignment:

+-------------------------------------------------------------------------+
| STEP 1: BASE CLASSIFICATION & REGULATORY LIMITS                        |
| Verify UN Number, Proper Shipping Name, Packing Group, & Net Qty        |
| against DGR Table 4.2 (Columns A through N).                            |
+-------------------------------------------------------------------------+
                                    |
                                    v
+-------------------------------------------------------------------------+
| STEP 2: GEOGRAPHIC & STATE VARIATION AUDIT (SECTION 2.8)                |
| Audit Origin State, All Transit/Overflight States, & Destination State. |
| (e.g. 24-hr emergency number USG-12 for the US, FRG-07 for France.)    |
+-------------------------------------------------------------------------+
                                    |
                                    v
+-------------------------------------------------------------------------+
| STEP 3: CARRIER & OPERATOR VARIATION AUDIT (SECTION 2.9)               |
| Audit Operating Carrier, Interline/Connecting Carriers, & Freight Forwarder.|
| (e.g. JL-11 documentation, QY-06 / Q7-06 radioactive waste bans.)      |
+-------------------------------------------------------------------------+
                                    |
                                    v
+-------------------------------------------------------------------------+
| STEP 4: RULE OF MAXIMUM STRICTNESS RESOLUTION                          |
| Apply the most restrictive limit across Base, State, and Operator rules.|
| If ANY entity prohibits the item -> REJECT / REROUTE SHIPMENT.         |
+-------------------------------------------------------------------------+

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6. Practical Case Study: Multi-Leg International Flight Audit

Scenario Details

• Shipper: Industrial Chemical Manufacturer in Toronto, Canada (YYZ).
• Consignment: 15 L net quantity of UN 1993, Flammable liquid, n.o.s. (contains ethanol and toluene), Class 3, Packing Group II.
• Packaging: Single UN 4G Fiberboard Box containing glass inner packagings.
• Intended Route: Toronto (YYZ) $\rightarrow$ Memphis (MEM) on an all-cargo carrier $\rightarrow$ Frankfurt (FRA) interlined onto a passenger carrier.

Step-by-Step Audit Resolution

Step 1: Base DGR Check (Table 4.2)

• UN 1993, PG II is permitted on Passenger Aircraft under PI 353 (Max 5L net per package) and Cargo Aircraft Only under PI 364 (Max 60L net per package).
• Package net quantity is 15 L. Therefore, this shipment exceeds the passenger aircraft limit (5 L) and MUST be routed as Cargo Aircraft Only (CAO), bearing the CAO label.

Step 2: State Variation Audit (Section 2.8)

1. Canada (CAG variations): Origin State. Read the full CAG block in Subsection 2.8 for documentation, language, and class restrictions applicable to a consignment departing Canada.
2. United States (USG-12): Transit State (MEM). USG-12 strictly applies: a 24-hour emergency response telephone number, with the international access code and — where a contracted service such as CHEMTREC is used — the contract number, must be shown on the Shipper's Declaration.
3. Germany (DEG variations): Destination State (FRA). Read the DEG block — not FRG, which is France.

Step 3: Operator Variation Audit (Section 2.9)

1. Origin all-cargo carrier (YYZ-MEM): read that carrier's block in Subsection 2.9. A freighter operator will normally accept UN 1993 PG II on a cargo aircraft, subject to its own documentation conditions.
2. Interline passenger carrier (MEM-FRA): this is where the audit breaks. A package prepared to the cargo aircraft only limit of PI 364 can never be loaded on a passenger aircraft — not because of an operator variation, but because the CAO label and the base regulation forbid it. The passenger limit under PI 353 is 5 L per package.

Step 4: Final Resolution under Rule of Maximum Strictness

• Under the Rule of Maximum Strictness, the shipment CANNOT be interlined onto the passenger carrier as packaged (a 15 L CAO package).
• Corrective Operational Action: The freight forwarder must either:
  1. Repackage the consignment into three separate packages of 5 L each so every package meets the passenger aircraft limit under PI 353 (provided the interline carrier's Subsection 2.9 entry accepts Class 3 PG II); OR
  2. Cancel the passenger interline leg and route the consignment on an all-cargo freighter for the entire transatlantic segment.