1. Special Provisions

49 CFR 172.102 Special Provisions — A-Codes

49 CFR 172.102 A-codes — special provisions that apply only to transportation by aircraft.

Excerpts from 49 CFR §172.102. Verify against the current official rule text before relying on them.

38 provisions
CodeDescriptionOpen
A61a. When used for purposes such as sterilization, inner packagings of peroxyacetic acid, stabilized, classified as UN 3107 Organic peroxide type E, liquid or UN 3109 Organic peroxide type F, liquid may be fitted with a vent consisting of hydrophobic membrane, provided:
(1) Each inner packaging contains not more than 70 mL;
(2) The inner packaging is designed so that the vent is not immersed in liquid in any orientation;
(3) Each inner packaging is enclosed in an intermediate rigid plastic packaging with a small opening to permit release of gas and contains a buffer that neutralizes the contents of the inner packaging in the event of leakage;
(4) Intermediate packagings are packed in a fiberboard box (4G) outer packaging;
(5) Each outer packaging contains not more than 1.4 L of liquid; and
(6) The rate of oxygen release from the outer packaging does not exceed 15 mL per hour.
b. Such packages must be transported on cargo aircraft only. The requirements of §173.24 and §173.27 do not apply.		View
A82The quantity limits in columns (9A) and (9B) do not apply to human or animal body parts, whole organs or whole bodies known to contain or suspected of containing an infectious substance.View
A100Lithium ion cells and batteries must be offered for transport at a state of charge not exceeding 30 percent of their rated capacity. Lithium ion cells and batteries at a state of charge greater than 30 percent of their rated capacity may only be transported under conditions approved by the Associate Administrator in accordance with the requirements in 49 CFR part 107, subpart H. Guidance and methodology for determining the rated capacity can be found in sub-§38.3.2.3 of the UN Manual of Tests and Criteria (IBR, see §171.7).View
A101In addition to the applicable requirements of §173.185, the quantity of lithium metal in the batteries contained in any piece of equipment must not exceed 12 g per cell and 500 g per battery.View
A105a. This entry applies to machinery or apparatus containing hazardous materials as a residue or as an integral element of the machinery or apparatus. It must not be used for machinery or apparatus for which a proper shipping name already exists in the §172.101 Table.
b. Where the quantity of hazardous materials contained as an integral element in machinery or apparatus exceeds the limits permitted by §173.222, and the hazardous materials meet the provisions of §173.222, the machinery or apparatus may be transported by aircraft only with the prior approval of the Associate Administrator.		View
A112Notwithstanding the quantity limits shown in Column (9A) and (9B) for this entry, the following IBCs are authorized for transportation aboard passenger and cargo-only aircraft. Each IBC may not exceed a maximum net quantity of 1,000 kg:
a. Metal: 11A, 11B, 11N, 21A, 21B and 21N
b. Rigid plastics: 11H1, 11H2, 21H1 and 21H2
c. Composite with plastic inner receptacle: 11HZ1, 11HZ2, 21HZ1 and 21HZ2
d. Fiberboard: 11G
e. Wooden: 11C, 11D and 11F (with inner liners)
f. Flexible: 13H2, 13H3, 13H4, 13H5, 13L2, 13L3, 13L4, 13M1 and 13M2 (flexible IBCs must be sift-proof and water resistant or must be fitted with a sift-proof and water resistant liner).		View
A189Except where the defining criteria of another class or division are met, concentrations of formaldehyde solution:
a. With less than 25 percent but not less than 10 percent formaldehyde, must be described as UN3334, Aviation regulated liquid, n.o.s.; and
b. With less than 10 percent formaldehyde, are not subject to this subchapter.		View
A191Notwithstanding the Division 6.1 subsidiary risk for this description, the toxic subsidiary risk label and the requirement to indicate the subsidiary risk on the shipping paper are not required for manufactured articles containing less than 5 kg (11 pounds) of mercury.View
A200These articles must be transported as cargo and may not be carried aboard an aircraft by passengers or crewmembers in carry-on baggage, checked baggage, or on their person unless specifically authorized in §175.10.View
A210This substance is forbidden for transport by air. It may be transported on cargo aircraft only with the prior approval of the Associate Administrator.View
A212“UN 2031, Nitric acid, other than red fuming, with more than 20% and less than 65% nitric acid” intended for use in sterilization devices only, may be transported on passenger aircraft irrespective of the indication of “forbidden” in columns (9A) of the §172.101 table provided that:
a. Each inner packaging contains not more than 30 mL;
b. Each inner packaging is contained in a sealed leak-proof intermediate packaging with sufficient absorbent material capable of containing the contents of the inner packaging;
c. Intermediate packagings are securely packed in an outer packaging of a type permitted by §173.158 which meet the requirements of part 178 of this subchapter at the Packing Group I performance level;
d. The maximum quantity of nitric acid in the package does not exceed 300 mL; and
e. Transport in accordance with this special provision must be noted on the shipping paper.		View
A224UN3548, Articles containing miscellaneous dangerous goods, n.o.s. may be transported on passenger and cargo-only aircraft, irrespective of the indication of “forbidden” in Columns (9A) and (9B) of the Hazardous Materials Table, provided: (a) with the exception of lithium cells or batteries that comply with §173.185, as applicable, the only hazardous materials contained in the article is an environmentally hazardous substance; (b) the articles are packed in accordance with §173.232 reference to Special Provision A224 is made on the shipping paper.View
A225UN3538, Articles containing non-flammable, non-toxic gas, n.o.s. may be transported on passenger and cargo-only aircraft irrespective of the indication of “forbidden” in Columns (9A) and (9B) of the Hazardous Materials Table, provided: (a) with the exception of lithium cells or batteries that comply with §173.185, as applicable, the only dangerous good 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 §173.232; and §173.232 reference to Special Provision A225 is made on the shipping paper.View