Versions of CFR > Title 49 > Subtitle A > Part 40 > Subpart O - Substance Abuse Professionals and the Return-to-Duty Process on LawServer 2024 CFR > Title 49 > Subtitle A > Part 40 > Subpart O – Substance Abuse Professionals and the Return-to-Duty Process 2023 CFR > Title 49 > Subtitle A > PART 40 > Subpart O – Substance Abuse Professionals and the Return-to-Duty Process 2022 CFR > Title 49 > Subtitle A > Part 40 > Subpart O – Substance Abuse Professionals and the Return-to-Duty Process 2021 CFR > Title 49 > Subtitle A > Part 40 > Subpart O – Substance Abuse Professionals and the Return-to-Duty Process 2020 CFR > Title 49 > Subtitle A > Part 40 > Subpart O – Substance Abuse Professionals and the Return-to-Duty Process 2019 CFR > Title 49 > Subtitle A > Part 40 > Subpart O – Substance Abuse Professionals and the Return-to-Duty Process 2016 CFR > Title 49 > Subtitle A > Part 40 > Subpart O – Substance Abuse Professionals and the Return-to-duty Process 2015 CFR > Title 49 > Subtitle A > Part 40 > Subpart O – Substance Abuse Professionals and the Return-to-Duty Process 2014 CFR > Title 49 > Subtitle A > Part 40 > Subpart O – Substance Abuse Professionals and the Return-to-Duty Process
