Incident Details
An incorrect unit load device (ULD), weighing 245 kg, was loaded onto a flight operated by VGI to Sunshine Coast. The load sheet for that flight recorded a ULD weighing 93 kg. The discrepancy arose when a freight clerk placed the freight card intended for the Sunshine Coast flight onto a ULD destined for Adelaide, and simultaneously placed the card for the Adelaide flight onto the ULD meant for Sunshine Coast. Consequently, the Adelaide ULD was sent to Sunshine Coast.
Cause
The error occurred because both ULDs shared the same ULD number. It is likely that the clerk misread the flight details and attached the incorrect cards to the ULDs. The identical ULD number contributed to the confusion.
System Issue
In the older processing system, the same ULD number could be entered twice without triggering an error. In contrast, the newer system would generate an error feedback if a duplicate entry were attempted. Without such feedback, the clerk had no indication that the same container had been entered twice. Additionally, the data cross-check is performed by the same individual who entered the information, making it challenging to detect errors, especially during periods of high workload.
Potential Impact
The source notes that a similar error involving heavier weights could have a significant impact on the handling and performance of an aircraft.