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7 Air Transportation Requirements

71 General

This chapter contains information and guidelines on the mailability of hazardous materials, restricted matter, and perishable matter in domestic mail via air transportation. (For International, APO/FPO mail see chapter 6.)

Full compliance with the regulations governing the shipment of harmful matter by air transportation is essential because these materials can endanger postal employees, airline passengers and personnel, aircraft equipment, and postal equipment and facilities.

For the purposes of this chapter, air transportation requirements apply to all mailable hazardous materials, restricted matter, and perishable matter sent via Priority Mail Express, Priority Mail, First-Class Mail, or First-Class Package Service.