Why is the empty weight center of gravity range not given in the Type Certificate Data Sheets for some aircraft?

Why is the empty weight center of gravity range not given in the Type Certificate Data Sheets for some aircraft?

• A. It is always included for all aircraft.
• B. The empty weight center of gravity range is given only for aircraft that cannot be legally loaded in such a way that the loaded center of gravity will fall outside of the allowable limits.
• C. It is a regulatory guideline for all aircraft.
• D. It pertains to wing loading only.

Answer: (B)

The essential idea is weight and balance data shown in the Type Certificate Data Sheet (TCDS) depends on whether the empty-weight position can influence compliance with the certified CG limits during legal loading. If there is no legal loading that could move the center of gravity outside the approved envelope, then listing the empty-weight CG range isn’t useful, so it isn’t provided. Conversely, when there could be a legitimate loading scenario that challenges the CG limits, the empty-weight CG range is specified to show how the empty-weight position relates to the allowable balance as loading occurs. That matches the statement that the empty weight center of gravity range is given only for aircraft that cannot be legally loaded in such a way that the loaded center of gravity will fall outside of the allowable limits.

The essential idea is weight and balance data shown in the Type Certificate Data Sheet (TCDS) depends on whether the empty-weight position can influence compliance with the certified CG limits during legal loading. If there is no legal loading that could move the center of gravity outside the approved envelope, then listing the empty-weight CG range isn’t useful, so it isn’t provided. Conversely, when there could be a legitimate loading scenario that challenges the CG limits, the empty-weight CG range is specified to show how the empty-weight position relates to the allowable balance as loading occurs. That matches the statement that the empty weight center of gravity range is given only for aircraft that cannot be legally loaded in such a way that the loaded center of gravity will fall outside of the allowable limits.