If the CG is aft of 236 inches, how should the nose be set for trim?

• A. Set the nose on the green diamond
• B. Set the nose below the green diamond
• C. Set the nose on the green circle
• D. Do not adjust trim

Answer: (A)

When CG location changes, the elevator trim needed to hold the desired pitch also changes. An aft CG shifts the balance in a way that the recommended trim position moves to a specific indicator mark so you can maintain level flight with minimal control effort.

In this PC-12 NGX scenario, the indicator mark that corresponds to aft-CG conditions is the green diamond. Setting the nose to that mark places the elevator trim in the appropriate range to counter the aft CG’s effect, giving stable, comfortable pitch without needing constant pressure on the controls.

Choosing a position below the green diamond or at a different mark would put you outside the trim range optimized for aft CG, leading to more control effort, potential over/under-trimming, and less stable flight. Not adjusting trim at all would also require ongoing pilot input and isn’t appropriate for aft-CG conditions.