This SAE Aerospace Recommended Practice (ARP) defines minimum requirements for an aircraft transport ULD to transport horses properly and safely by air, to protect the horse(s) from injuries, and to protect the aircraft from corrosion created by waste spill. The ULD is designed to accommodate one horse or several.
Rationale: ARP1621C clarifies the function of the Unit Load Devices (ULDs) described, updates the references, corrects editorial content compared to ARP1621B, and harmonizes it with other industry standards.
