How long does it take for a piston or turboprop aircraft to complete a 180-degree turn?

A piston or turboprop aircraft typically requires about 60 seconds to complete a 180-degree turn under normal circumstances. This duration can be influenced by various factors, including the aircraft's speed, bank angle, and the proficiency of the pilot executing the turn. The standard practice for such turns often ensures safety and control, balancing efficiency without sacrificing the aircraft's handling characteristics.

This timeframe is important for pilots to understand, as it helps in planning maneuvers, especially during approach and landing phases. Knowing the time required for a turn also assists in maintaining safe distances from other aircraft and terrain during flight operations. The other options suggest either faster or slower durations which do not align with standard operating practices for piston and turboprop aircraft, making the 60 seconds the most reasonable and applicable timeframe.