Note the data used to populate “Approval Search” is being reconfigured into a new document management system and as a result some of the data posted may be a few weeks out of date. We anticipate that the search feature will be up-to-date by mid-March. If you need information concerning application status that is not available in this search, please contact: PHMSA Approvals@dot.gov or call 202/366-3987. We apologize for any inconvenience.
(Note approved by the Office of Special Permits and Approvals)

The following are links to additional information about Approvals, Terminations, and associated documents.

At the beginning of 2000, it became necessary to update the Competent Authority (CA) numbering system from the seven-digit sequence to the current 10-digit sequence. The old seven-digit number (and in a few cases, nine-digit number) and the new 10-digit number are interchangeable. It is not necessary to apply for a new number and the old number is still valid. All CA's issued by the Approvals Office will contain the new 10-digit number. If you company is using packagings, labels, and/or stamps with the old number, you may continue to use them when practicable.