（Questions on interpretation of Forbidden items listed in DGR 4.2.）
Q.
I have a question on how to interpret those items listed as “Forbidden” in the DG List (DGR 4.2). I understand if the item is listed in light type, with no UN number and “Forbidden” marked for columns “G” through “L” and with no Special Provision, that item cannot be transported by aircraft. How can a shipper get “Approval” per DGR 1.2.5 or get “Exemption” per DR 1.2.6 for that item?
For example:
① Acrylic acid, unstabilized is listed in light type, have no UN number, and no Special Provision. This means this item is forbidden under any circumstances.
② UN1541 Acetone cyanohydrim, stabilized is listed in bold type, have UN number, and have Special Provision.
③ 1,3,2-Benzodiaxaborole is listed in light type, have no UN number, but have Special Provision.
For items ② and ③, if shipper wants to ship them, can they ship under “Exemption” (DGR 1.2.6) ?
For items listed in DGR 4.2, which can be shipped under “Approval (1.2.5)” or “Exemption (1.2.6)”, how would the shipper know which item is under “Approval” or under “Exemption” ? Please advise. (31 Aug 19)
A.
First of all, you need to understand DGR 2.1.1 “Dangerous goods forbidden on aircraft under any circumstaces”, and Notes: 1 in particular. When an item is listed in DGR 4.2 in light type and without a UN number and marked “Forbidden”, it is a “NO” item. Unless there is a Special Provision giving means to secure an approval, it is an “absolute NO item”.
Your item #③, 1.3.2-Benzodiaxaborole which is in light type, no UN number, but has a SP A210 falls under the same explanation as stated above. SP A210 says it can be transported on CAO aircraft provided an “Approval” (DGR 1.2.5) is obtained from the State of Origin and of the Operator.
Your item #②, UN1541 Acetone cyanohydrin, stabilized listed in bold type, with a UN number, but Forbidden has a SP A2 which gives a way to get “Approval” (DGR 1.2.5) from the State of Origin and of the Operator to ship on a CAO.
As stated above, the DG list (DGR 4.2) will tell the shipper ways and means for an “Approval” (DGR 1.2.5) such as with a Special Provision. “Exemption” (DGR 1.2.6) is for a rare case of emergency where the shipper wants, such as, to ship more quantity than the limits given, or shortcut some of the rules. The shipper can not ship items shown in light type, with no UN number, and no SP. These are “absolutely” forbidden. An example is your item #① Acrylic acid, unstabilized.
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