During sling-load operations, which item is NOT a primary wind effect?

During sling-load operations, which item is NOT a primary wind effect?

• A. Rotor blade wear.
• B. Lift efficiency.
• C. Load swing.
• D. Approach stability.

Answer: (A)

During sling-load operations, wind effects describe how wind and the rotor’s downwash interact with the suspended load and the aircraft’s flight path. These effects include the load’s tendency to swing in gusty conditions, how crosswinds and gusts impact the stability of the approach and lift-off, and how wind alters rotor inflow and the amount of lift the rotor can produce (lift efficiency). Rotor blade wear, however, is a mechanical consequence of operation over time and not a wind-induced phenomenon occurring during the sling-load activity. So the item that is not a primary wind effect is rotor blade wear.

During sling-load operations, wind effects describe how wind and the rotor’s downwash interact with the suspended load and the aircraft’s flight path. These effects include the load’s tendency to swing in gusty conditions, how crosswinds and gusts impact the stability of the approach and lift-off, and how wind alters rotor inflow and the amount of lift the rotor can produce (lift efficiency). Rotor blade wear, however, is a mechanical consequence of operation over time and not a wind-induced phenomenon occurring during the sling-load activity. So the item that is not a primary wind effect is rotor blade wear.