ULD Control

ULD Control is the management system and messaging protocol used by airlines and ground service providers to track and control the location, status, and movement of Unit Load Devices (ULDs) throughout the global air cargo network. It operates primarily through standardized IATA messaging formats including the ULD Control Message (UCM) and ULD Control Receipt (UCR) to provide real-time inventory visibility and transfer documentation. Airlines maintain ULD control departments responsible for managing these valuable assets worth over USD 1 billion globally, ensuring proper accountability when ULDs move between carriers, ground handlers, freight forwarders, and other third parties.

A Cathay Pacific flight CX893 sends a UCM message showing ULD movements: 'UCM CX893/12.HKG IN AKE12642.AKE12384.AKE12866.AKE12878.AKE12381.AKE12993.AKE01125JL OUT .AKE14101/KHI.AKE11401/KHI.AKE84103LH/BKK' indicating which ULDs are loaded IN and OUT at Hong Kong, with some containers destined for Karachi (KHI) and Bangkok (BKK) on other carriers. When Lufthansa Cargo transfers ULD AKE12345LH to American Airlines at Frankfurt, a ULD Control Receipt (UCR) is issued with a unique 11-digit number (3-digit airline accounting code 001 for AA plus 8-digit serial number) and an LUC message is transmitted to track the interline transfer.

• UCON
• ULD management
• container management
• ULD control message

What is the difference between a UCM and UCR in ULD Control messaging?

The UCM (ULD Control Message) is an IATA standard message that provides flight-specific information about which ULDs are loaded IN and OUT of aircraft, serving as the backbone of ULD messaging for inventory tracking. The UCR (ULD Control Receipt) is a physical or electronic transfer document issued when ULDs change custody between parties, accompanied by an LUC (Loaned ULD Control) message containing an 11-digit reference number.

How much does poor ULD Control cost the air cargo industry annually?

Poor ULD management and control contributes to approximately USD 400 million in annual costs to the air cargo industry through ULD-related ground damage, repairs, and asset losses. With about 1 million aircraft ULDs in service representing a replacement value of over USD 1 billion, proper ULD Control is essential for protecting these expensive assets that average $1100 each.