49 CFR 175.30
Inspecting shipments.
(a)No person may accept a hazardous material for transportation aboard an aircraft unless the aircraft operator ensures the hazardous material is:#
(1)Authorized, and is within the quantity limitations specified for carriage aboard aircraft according to § 172.101 of this subchapter or as otherwise specifically provided by this subchapter.#
(2)Described and certified on a shipping paper prepared in duplicate in accordance with part 172 of this subchapter or as authorized by subpart C of part 171 of this subchapter. See § 175.33 for shipping paper retention requirements;#
(3)Marked and labeled in accordance with subparts D and E of part 172 or as authorized by subpart C of part 171 of this subchapter, and placarded (when required) in accordance with subpart F of part 172 of this subchapter; and#
(4)Labeled with a “CARGO AIRCRAFT ONLY” label (see § 172.448 of this subchapter) if the material as presented is not permitted aboard passenger-carrying aircraft.#
(b)Except as provided in paragraph (d) of this section, no person may carry a hazardous material in a package or overpack aboard an aircraft unless the package or overpack is inspected by the operator of the aircraft immediately before placing it:#
(1)Aboard the aircraft; or#
(2)In a unit load device or on a pallet prior to loading aboard the aircraft.#
(c)A hazardous material may be carried aboard an aircraft only if, based on the inspection by the operator, the package or overpack containing the hazardous material:#
(1)Has no leakage or other indication that its integrity has been compromised; and#
(2)For Class 7 (radioactive) materials, does not have a broken seal, except packages contained in overpacks need not be inspected for seal integrity.#
(d)The requirements of paragraphs (b) and (c) of this section do not apply to Dry ice (carbon dioxide, solid).#
(e)An overpack containing packages of hazardous materials may be accepted only if the operator has taken all reasonable steps to establish that:#
(1)The proper shipping names, identification numbers, labels and special handling instructions appearing on the inside packages are clearly visible or reproduced on the outside of the overpack, and#
(2)The word “OVERPACK” appears on the outside of the overpack when specification packagings are required.#