UN 3538 - Articles containing non-flammable, non-toxic gas, n.o.s. may be transported on passenger and cargo aircraft irrespective of the indication of "forbidden" in columns 10 to 13 of Table 3-1, provided:
a) with the exception of lithium cells or batteries that comply with Section II of Packing Instruction 967, as applicable, or Section II of Packing Instruction 970, as applicable, the only dangerous goods contained in the article is a Division 2.2 gas without a subsidiary hazard, but excluding refrigerated liquefied gases and gases forbidden for transport on passenger aircraft;
b) the articles are packed in accordance with Packing Instruction 222; and
c) reference to Special Provision A225 is made on the dangerous goods transport document as required by Part 5;4.1.5.8.
All other provisions of these Instructions apply. If the above conditions are met, the requirements of Special Provision A2 do not apply.