---
kind: "section"
citation: "14 C.F.R. § 120.103"
title: "14"
number: "120.103"
heading: "General."
url: "https://uscodex.org/cfr/14/120.103"
---

# §120.103. General.

- (a) **Purpose.** The purpose of this subpart is to establish a program designed to help prevent accidents and injuries resulting from the use of prohibited drugs by employees who perform safety-sensitive functions.
- (b) **DOT procedures.**
  - (1) Each employer shall ensure that drug testing programs conducted pursuant to 14 CFR parts [65](/cfr/14/part65.md), [91](/cfr/14/part91.md), 121, and 135 comply with the requirements of this subpart and the “Procedures for Transportation Workplace Drug Testing Programs” published by the Department of Transportation (DOT) ([49 CFR part 40](/cfr/49/part40.md)).
  - (2) An employer may not use or contract with any drug testing laboratory that is not certified by the Department of Health and Human Services (HHS) under the National Laboratory Certification Program.
- (c) **Employer responsibility.** As an employer, you are responsible for all actions of your officials, representatives, and service agents in carrying out the requirements of this subpart and [49 CFR part 40](/cfr/49/part40.md).
- (d) **Applicable Federal regulations.** The following applicable regulations appear in [49 CFR](/cfr/49.md) or [14 CFR](/cfr/14.md):
  - (1) [49 CFR part 40](/cfr/49/part40.md)—Procedures for Transportation Workplace Drug Testing Programs.
  - (2) [14 CFR](/cfr/14.md):
    - (i) [§ 67.107](/cfr/14/67.107.md)—First-Class Airman Medical Certificate, Mental.
    - (ii) [§ 67.207](/cfr/14/67.207.md)—Second-Class Airman Medical Certificate, Mental.
    - (iii) [§ 67.307](/cfr/14/67.307.md)—Third-Class Airman Medical Certificate, Mental.
    - (iv) [§ 91.147](/cfr/14/91.147.md)—Passenger carrying flight for compensation or hire.
    - (v) [§ 135.1](/cfr/14/135.1.md)—Applicability.
- (e) [RESERVED].

## Notes

### Amendments

[Amendment No. 120-4, 90 FR 59376, Dec. 19, 2025]

### Authority

Authority: 49 U.S.C. 106(f), 40101-40103, 40113, 40120, 41706, 41721, 44106, 44701, 44702, 44703, 44709, 44710, 44711, 45101-45105, 46105, 46306.

### Source

Source: Docket FAA-2008-0937, 74 FR 22653, May 14, 2009, unless otherwise noted.

### Amendments

[Amendment No. 120-4, 90 FR 59376, Dec. 19, 2025]