Each aircraft must have its own weight (mass) and balance calculations. The operator must verify that the ceritfied limitations (Forward and AFT limits) defined in the AFM are respected, reason for which a Trim sheet (Balance Chart) should be established for each aircraft taking into account the dry operating weight (mass) and the corresponding dry operating index. In some conditions , It is possible to establish a fleet dry operatin weight and index.

We perform weight (mass) and balance calculations for all types of aircrafts. We determine the DOW "Dry Operating Weight" and the DOI "Dry Operating Index", we provide the conception of the trimsheet "Balance Chart", the AHM560, and the corresponding loading instructions to be taken into account in both cargo loading and passenger boarding operations.

See below to have an overview about the "Trimsheet" for the B747-400 and "Trimsheet" & AHM560 for the B757-200: