An unmanned aircraft with the center of gravity too far aft is most likely to exhibit which characteristic?

Why →When CG moves aft of approved limits, longitudinal stability decreases. The aircraft pitches up, and the elevator or flight controller may lack authority to push the nose down. Extreme aft CG can result in a pitch-up that cannot be recovered. Aft out-of-limits is more dangerous than forward out-of-limits.

Field note →For fixed-wing mapping UAVs carrying forward-facing sensors, the camera and gimbal forward of CG helps balance battery or avionics weight aft. Always verify the combined CG after attaching any non-standard payload.