The following persons may be carried aboard an airplane without complying with the passenger-carrying requirements of this part:
A crewmember.
A person necessary for the safe handling of animals on the airplane.
A person necessary for the safe handling of hazardous materials (as defined in subchapter C of title 49 CFR).
A person performing duty as a security or honor guard accompanying a shipment made by or under the authority of the U.S. Government.
A military courier or a military route supervisor carried by a military cargo contract operator if that carriage is specifically authorized by the appropriate military service.
An authorized representative of the Administrator conducting an en route inspection.
A person authorized by the Administrator.