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United States Department of Transportation United States Department of Transportation

Q&As for Safety-Sensitive Employees

The following questions are the most common inquiries received by the FAA's Drug Abatement Division from individuals or employees who perform safety-sensitive functions and are subject to Federal drug and alcohol testing in the aviation industry. The questions and responses below aim to bring greater understanding and awareness to the Federal drug and alcohol testing regulations [49 CFR part 40 and 14 CFR part 120].

The following questions are frequently asked by individuals who are being investigated by the FAA Drug Abatement Division, Special Investigations Branch and receive a Letter of Investigation (LOI) regarding a drug/alcohol violation.

If you have any additional questions regarding the DOT/FAA drug and alcohol testing program, please contact the Drug Abatement Division via email at or call (202) 267-8442.

The Department of Transportation's Office of Drug and Alcohol Policy and Compliance has also published a list of Frequently Asked Questions by employees.

Last updated: Friday, May 12, 2023