[Header] PHMSA - U.S. Department of Transportation - Pipeline and Hazardous materials Safety Adminis

The items below are the currently open NTSB recommendations regarding intermodal transit and the OHMS responses. For copies of the specific letters containing the NTSB/OHMS dialog, click the link for the specific item and review the list of "Related Downloads" on the right.

NTSB Classifications:

  • OAR - Open Acceptable Response
  • OAA - Open Acceptable Action
  • OAAR - Open Acceptable Alternative Action
  • OUA - Open Unacceptable Action
  • OUR - Open Unacceptable Response
  • UCL - Unclassified (until NTSB Classifies)
Currently Open Recommendations
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