Regulations

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49 CFR Part 40	The DOT's procedural regulation, regulating drug and alcohol testing programs for all transportation modes (FAA, FMCSA, FRA, FTA, PHMSA, and USCG). Describes required procedures for conducting workplace drug and alcohol testing for the Federally regulated transportation industry.
14 CFR Part 120	The FAA's drug and alcohol testing regulation for the aviation industry. Defines regulated aviation employers and employees who must be tested, types of testing required, how to implement a testing program, etc.

Final Rule	14 CFR Part 120, Combined Drug and Alcohol Testing Programs, Published July 15, 2013.
Final Rule	14 CFR Part 120, Drug and Alcohol Testing Program, Published May 14, 2009.
CFR Correction	14 CFR Part 121, Disqualification for Airman and Airman Medical Certificate Holders Based on Alcohol Violations or Refusals to Submit to Drug and Alcohol Testing, Published March 23, 2007.
Final Rule Technical Amendment Correcting Amendment	National Air Tour Safety Standards (Multiple CFR Parts), February 13, 2007, March 15, 2007, June 7, 2007.
Correcting Amendment	14 CFR Part 121, Disqualification for Airmen and Medical Certificate Holders based on Alcohol Violations and Refusals to Submit to Drug or Alcohol Testing, October 24, 2006.
Final Rule	Disqualification for Airman and Airman Medical Certificate Holders Based on Alcohol Violations or Refusals To Submit to Drug and Alcohol Testing (Multiple CFR Parts), June 21, 2006.
Final rule; delay in compliance date	14 CFR Part 121, Antidrug and Alcohol Misuse Prevention Programs for Personnel Engaged in Specified Aviation Activities, April 5, 2006.
Final Rule	14 CFR Part 121, Antidrug and Alcohol Misuse Prevention Programs for Personnel Engaged in Specified Aviation Activities, January 10, 2006.