The following applicable regulations appear in 49 CFR and 14 CFR:
(a) 49 CFR Part 40 - Procedures for Transportation Workplace Drug Testing Programs
(b) 14 CFR:
(1) § 67.107 - First-Class Airman Medical Certificate, Mental.
(2) § 67.207 - Second-Class Airman Medical Certificate, Mental.
(3) § 67.307 - Third-Class Airman Medical Certificate, Mental.
(4) § 91.147 - Passenger carrying flights for compensation or hire.
(5) § 135.1 - Applicability
[Doc. No. FAA-2008-0937, 74 FR 22653, May 14, 2009; Amdt. 120-0A, 75 FR 3154, Jan. 20, 2010]