Revision to Special Permit 21774
On January 23, 2026 the second revision of DOT SP 21774 was issued by the DOT Pipeline and Hazardous Materials Safety Administration (PHMSA). These changes were requested by American Airlines and thereafter approved by the DOT.
Second Revision to DOT SP 21774
Changes in revision 2 include the addition of approved “corrugated plastic boxes,” manufactured in accordance with Air Transport Association (ATA) specification 300, that may be used for transportation when using the special permit. This packaging was added in addition to the previously approved corrugated fiberboard (cardboard) boxes. No other changes were made.
History of DOT SP 21774
On August 5, 2025 Tym’s applied for and received the original Emergency Special Permit 21774, which was quickly revised on September 3, 2024 to include important changes for easy adoption by the aviation industry. Tym’s was happy to offer this solution for use by any company or individual by insisting that the DOT allow party status to our special permit.
Benefits to Party Status Special Permits
Party status special permits benefit the industry and regulatory authority by reducing the number of special permits issued, thereby reducing documentation, examination, and analysis by the Department of Transportation and regulated entities.
Revision 2 to DOT SP 21774 represents the main benefit of party status special permits. When revising an existing special permit, the applicant increases regulatory flexibility for everyone who is currently a “party to” the permit and realizes a substantial savings of cost and complexity over the issuance of an entirely new permit.
We are proud that US airlines have adopted our regulatory solution and hope that the DOT will issue more party status special permits in the future, even if the applicant requests not to allow party status. A regulatory problem for one entity likely requires a regulatory solution for many others. These types of special permits allow the greatest flexibility until the Hazardous Materials Regulations are changed to incorporate the underlying problem.
Utilizing Tym’s to draft a party status special permit may shield your organization from regulatory, industry, and investor scrutiny. Utilizing an existing Special Permit and applying for party status is an easy way to improve compliance. Reach out today to discuss the best hazardous materials transportation solution for your company.
Click the link for more information on DOT SP 21774