133.1—Applicability.
This part prescribes—
(b)
Operating and certification rules governing the conduct of rotorcraft external-load operations in the United States by any person.
(2)
Rotorcraft manufacturers demonstrating compliance of equipment utilized under this part or appropriate portions of part 27 or 29 of this chapter ;
(3)
Operations conducted by a person demonstrating compliance for the issuance of a certificate or authorization under this part;
(4)
Training flights conducted in preparation for the demonstration of compliance with this part; or
(d)
For the purpose of this part, a person other than a crewmember or a person who is essential and directly connected with the external-load operation may be carried only in approved Class D rotorcraft-load combinations.