Which condition describes a difficulty in maintaining a stable flight path?

• A. Unsteady flight
• B. Smooth cruise
• C. Level ascent
• D. Gentle descent

Answer: (A)

Stability in flight means the aircraft holds its intended path and attitude despite disturbances, returning to a steady state rather than wandering. When a plane has trouble staying on a steady path, with ongoing deviations in attitude or trajectory, that describes unsteady flight. It signals the aircraft isn’t dampening disturbances and cannot maintain a consistent track, altitude, or airspeed. In contrast, a smooth cruise implies steady, unperturbed flight; a level ascent denotes a steady climb with constant attitude; a gentle descent indicates a controlled, stable descent. So the condition that matches difficulty in maintaining a stable flight path is unsteady flight.