CFR > Title 14 - Aeronautics and Space > CHAPTER I—FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION > SUBCHAPTER G—AIR CARRIERS AND OPERATORS FOR COMPENSATION OR HIRE: CERTIFICATION AND OPERATIONS (parts 110 to 139) > PART 120—DRUG AND ALCOHOL TESTING PROGRAM > SUBPART D—Part 119 Certificate Holders Authorized To Conduct Operations under Part 121 or Part 135 or Operators Under § 91.147 of This Chapter and Safety-Sensitive Employees (§120.31 > 120.31—Prohibited drugs.

120.31—Prohibited drugs.

(a) Each certificate holder or operator shall provide each employee performing a function listed in subpart E of this part, and his or her supervisor, with the training specified in that subpart.
(b) No certificate holder or operator may use any contractor to perform a function listed in subpart E of this part unless that contractor provides each of its employees performing that function for the certificate holder or operator, and his or her supervisor, with the training specified in that subpart.