The “CHECK WEIGHT” message on the MCDU of an Airbus A320 indicates a discrepancy between the gross weight (GW) computed by FMGC and FAC. When this message appears, it suggests that the difference between the weights calculated by these two systems exceeds 7 tons. Such a significant variance could potentially impact the aircraft’s performance calculations, especially during critical phases of flight such as takeoff and landing.


Check FMS FOB and ZFW value from Load and Trim sheet.

  • If the entered value on INIT B page is wrong, correct the same.
  • If the entered value on INIT B page is correct, disregard VLS, F, S, GREEN DOT speeds on PFD as they are computed by FAC. Use FMS GW and check operating speeds in QRH.

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