Rotorcraft-load combination

The combination of a rotorcraft and an external-load, including the external-load attaching means. Rotorcraft-load combinations are designated as Class A, Class B, Class C, and Class D, as follows:
  1. Class A rotorcraft-load combination: one in which the external load cannot move freely, cannot be jettisoned, and does not extend below the landing gear.
  2. Class B rotorcraft-load combination: one in which the external load is jettisonable and is lifted free of land or water during the rotorcraft operation.
  3. Class C rotorcraft-load combination: one in which the external load is jettisonable and remains in contact with land or water during the rotorcraft operation.
  4. Class D rotorcraft-load combination: one in which the external-load is other than a Class A, B, or C and has been specifically approved by the Administrator for that operation.

Source: 14 CFR Federal Aviation Regulations 1

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