In addition to the basic guidelines in 251, acceptance personnel must follow the Aviation Mail Security Hazardous Materials Program Instructions for the acceptance of hazardous materials. Ensure the following:
- Each mailpiece presented contains a mailable hazardous material that is properly packaged and labeled.
- If required, the mailpiece bears the required shipper’s declaration for dangerous goods (see 326 and 725.3).
- The mailpiece is eligible for air transportation and postage is paid at the Priority Mail Express, Priority Mail, or First–Class Mail rates, as permitted.
Note: For safety reasons, mailpieces containing hazardous materials that are not eligible for air transportation cannot pay postage at an Priority Mail Express, Priority Mail, or First–Class Mail rate and must be marked “Surface Mail” or “Surface Mail Only.”
In addition to the basic guidelines in 252, Postal Service personnel involved with mail dispatch via air transportation must follow the Aviation Mail Security, Hazardous Materials Program Instructions and the POM. These policy statements provide interim field instructions for handling mailpieces containing hazardous materials within mail processing areas and the proper tendering of such mail to the air carriers.