In helicopter spacing, which method is practical for sequence and spacing?

• A. Altitude changes
• B. Engine power changes
• C. Speed adjustments
• D. Holding patterns

Answer: (C)

Controlling spacing relies on managing how fast you close the gap along the flight path. Speed adjustments are practical because they directly change the rate of closure while keeping the lead’s altitude and route unchanged, allowing clean sequencing and a stable, predictable interval. Small, coordinated changes in airspeed let you tighten or widen spacing smoothly without introducing climbs, descents, or extra waiting time, which helps maintain formation integrity and efficient use of airspace.

Altitude changes alter vertical separation and add complexity with terrain, airspace constraints, and coordination with other aircraft. Engine power changes can affect performance in ways that ripple into speed and altitude, making spacing less predictable. Holding patterns can achieve spacing but waste time and airspace, and are not as efficient for routine sequencing.