The operator's procedure for confirming the validity of the flight management system generated take-off weight did not place sufficient emphasis on the check against the load sheet.
Cobham Aviation Services Australia
09 February 2012
As a result of this occurrence, the Flight Management System (FMS) Weight Data Entry and Verification procedures were amended to confirm that that the FMS computed take-off weight corresponded to that contained in the load sheet.
Current issue status:
The operator have changed the procedure to check that the computed TOW corresponds to the TOW on the load sheet