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.

Code	Description	Open
`A1`	Single packagings are not permitted on passenger aircraft.	View
`A2`	Single packagings are not permitted on aircraft.	View
`A3`	For combination packagings, if glass inner packagings (including ampoules) are used, they must be packed with absorbent material in tightly closed rigid and leakproof receptacles before packing in outer packagings.	View
`A4`	Liquids having an inhalation toxicity of Packing Group I are not permitted on aircraft.	View
`A5`	Solids having an inhalation toxicity of Packing Group I are not permitted on passenger aircraft and may not exceed a maximum net quantity per package of 15 kg (33 pounds) on cargo aircraft.	View
`A6`	For combination packagings, if plastic inner packagings are used, they must be packed in tightly closed metal receptacles before packing in outer packagings.	View
`A7`	Steel packagings must be corrosion-resistant or have protection against corrosion.	View
`A8`	For combination packagings, if glass inner packagings (including ampoules) are used, they must be packed with cushioning material in tightly closed metal receptacles before packing in outer packagings.	View
`A9`	For combination packagings, if plastic bags are used, they must be packed in tightly closed metal receptacles before packing in outer packagings.	View
`A10`	When aluminum or aluminum alloy construction materials are used, they must be resistant to corrosion.	View
`A11`	For combination packagings, when metal inner packagings are permitted, only specification cylinders constructed of metals which are compatible with the hazardous material may be used.	View
`A13`	Bulk packagings are not authorized for transportation by aircraft.	View
`A14`	This material is not authorized to be transported as a limited quantity or consumer commodity in accordance with §173.306 when transported aboard an aircraft.	View

`A19`	Combination packagings consisting of outer fiber drums or plywood drums, with inner plastic packagings, are not authorized for transportation by aircraft.	View
`A20`	Plastic bags as inner receptacles of combination packagings are not authorized for transportation by aircraft.	View
`A29`	Combination packagings consisting of outer expanded plastic boxes with inner plastic bags are not authorized for transportation by aircraft.	View
`A30`	Ammonium permanganate is not authorized for transportation on aircraft.	View
`A34`	Aerosols containing a corrosive liquid in Packing Group II charged with a gas are not permitted for transportation by aircraft.	View
`A35`	This includes any material which is not covered by any of the other classes but which has an anesthetic, narcotic, noxious or other similar properties such that, in the event of spillage or leakage on an aircraft, extreme annoyance or discomfort could be caused to crew members so as to prevent the correct performance of assigned duties.	View
`A37`	This entry applies only to a material meeting the definition in §171.8 for self-defense spray.	View
`A51`	For aircraft batteries, irrespective of the quantity limitations specified in Column (9A) of the §172.101 Table or §175.75, wet cell batteries, UN2794 or UN2795, up to a limit of 100 kg net mass per package may be transported aboard passenger aircraft. Transport in accordance with this special provision must be noted on the shipping paper.	View
`A53`	Refrigerating machines and refrigerating machine components are not subject to the requirements of this subchapter when containing less than 12 kg (26.4 pounds) of a non-flammable gas or when containing 12 L (3 gallons) or less of ammonia solution (UN2672) (see §173.307).	View
`A54`	Irrespective of the quantity limits in Column 9B of the §172.101 table, a lithium battery, including a lithium battery packed with, or contained in, equipment that otherwise meets the applicable requirements of §173.185, may have a mass exceeding 35 kg if approved by the Associate Administrator prior to shipment. When approved by the Associate Administrator and shipped in accordance with this special provision, the special provision must be noted on the shipping paper.	View
`A56`	Radioactive material with a subsidiary hazard of Division 4.2, Packing Group I, must be transported in Type B packages when offered for transportation by aircraft. Where the subsidiary hazard material is “Forbidden” in column (9A) or (9B) of the §172.101 Table, the radioactive material may only be offered for transportation and transported by aircraft under conditions approved by the Associate Administrator.	View
`A60`	Sterilization devices, when containing less than 30 mL per inner packaging with not more than 150 mL per outer packaging, may be transported in accordance with the provisions in §173.4a, irrespective of §173.4a, provided such packagings were first subjected to comparative fire testing. Comparative fire testing between a package as prepared for transport (including the substance to be transported) and an identical package filled with water must show that the maximum temperature measured inside the packages during testing does not differ by more than 200 °C (392 °F). Packagings may include a vent to permit the slow escape of gas (i.e. not more than 0.1 mL/hour per 30 mL inner packaging at 20 °C (68 °F) produced from gradual decomposition. The requirements of §173.24 and §173.27 do not apply.	View