Dead Weight (DWT)

Dead Weight (DWT) is the maximum weight capacity an aircraft can safely carry, including cargo, fuel, crew, baggage, and other operational necessities, excluding the aircraft's empty weight. In air cargo operations, this measurement determines the total payload available for freight and ensures compliance with aircraft weight limits and performance requirements. While the term originates from maritime shipping, in aviation it's more commonly referred to as maximum payload weight or useful load, and represents the critical factor in load planning and aircraft utilization for cargo carriers.

A Lufthansa Cargo Boeing 777F operating Frankfurt (FRA) to Hong Kong (HKG) has a maximum dead weight (revenue payload) of roughly 102 tonnes; a shipment of dense electronics with AWB 020-12345678 weighing 8 tonnes consumes that share of the aircraft's available payload capacity. On a FedEx Express Boeing 767F flying Memphis (MEM) to Paris (CDG), the dead weight limit shapes load planning: a 50-tonne pharmaceutical shipment on AWB 023-87654321 must be balanced against fuel weight and other freight to stay within the aircraft's certified maximum payload.

• deadweight
• payload weight
• weight limit

How does dead weight (DWT) differ from maximum payload weight in air cargo?

Dead weight includes all operational weight (fuel, crew, supplies) plus cargo, while maximum payload weight refers only to the revenue cargo capacity. For a Boeing 777F, the dead weight might be 165 tons total, but only 103 tons may be available for paying cargo after subtracting fuel and operational necessities.

Do air cargo carriers use dead weight (DWT) calculations for ULD loading?

Air cargo carriers typically use payload weight and dimensional weight calculations rather than DWT terminology. ULD planning focuses on the aircraft's structural payload limits (usually 6.8-11 tons per ULD position) and dimensional constraints rather than maritime-style deadweight tonnage measurements.