（I cannot find US DOT HM224B rule in the IATA DGR. Kindly guide me where to look?）
From an airport in the States where we operate, we are returning Crew use Oxygen bottles back to Japan. We need to follow US DOT H-224B where the use of a rigid outer packaging that meets specified flame penetration and thermal resistance requirements of HM-224B is mandated. We cannot find this requirement in the IATA DGR. Please advise. (28 Feb 15)
The DOT HM-224B rule is shown in IATA DGR 2.8.2 State Variation USG-18. By USG-18 you will be able to satisfy DOT HM-224B.