Versions of 14 CFR 1251.501 - Purpose on LawServer 2024 14 CFR 1251.501 – Purpose 2023 14 CFR 1251.501 – Purpose 2022 14 CFR 1251.501 – Purpose 2021 14 CFR 1251.501 – Purpose 2020 14 CFR 1251.501 – Purpose 2019 14 CFR 1251.501 – Purpose 2016 14 CFR 1251.501 – Purpose 2015 14 CFR 1251.501 – Purpose 2014 14 CFR 1251.501 – Purpose