Which practice helps ensure a safe sling-load lift by preventing load swing and ensuring proper rigging?

Which practice helps ensure a safe sling-load lift by preventing load swing and ensuring proper rigging?

• A. Allowing slack to form before lift.
• B. Relying on weather to control swing.
• C. Maintaining tension and steady flight maneuvers.
• D. Ignoring load plan details.

Answer: (C)

Controlling load swing during sling-load operations hinges on keeping the load line taut and flying with controlled, steady inputs. When the line remains tense, the system behaves like a damped pendulum: any swing energy is quickly damped by smooth, deliberate helicopter motions, and the load settles beneath the hook rather than flailing. Steady flight maneuvers—smooth cyclic and collective adjustments, with predictable headings—minimize abrupt accelerations that could excite swing and cause the load to swing wider. Proper rigging supports this by ensuring the load is attached securely at the correct points and distributed evenly, so the load behaves predictably under tension. Slack before lift removes the damping effect, allowing large, uncontrolled swing. Relying on weather to damp swing is unreliable; gusts and turbulence can vary and often worsen motion. Ignoring the load plan leads to mismatched rigging or attachment that can create imbalance and increase swing risk.

Controlling load swing during sling-load operations hinges on keeping the load line taut and flying with controlled, steady inputs. When the line remains tense, the system behaves like a damped pendulum: any swing energy is quickly damped by smooth, deliberate helicopter motions, and the load settles beneath the hook rather than flailing. Steady flight maneuvers—smooth cyclic and collective adjustments, with predictable headings—minimize abrupt accelerations that could excite swing and cause the load to swing wider. Proper rigging supports this by ensuring the load is attached securely at the correct points and distributed evenly, so the load behaves predictably under tension. Slack before lift removes the damping effect, allowing large, uncontrolled swing. Relying on weather to damp swing is unreliable; gusts and turbulence can vary and often worsen motion. Ignoring the load plan leads to mismatched rigging or attachment that can create imbalance and increase swing risk.