2024 14 CFR 135.147 – Dual controls required

2023 14 CFR 135.147 – Dual controls required

2022 14 CFR 135.147 – Dual controls required

2021 14 CFR 135.147 – Dual controls required

2020 14 CFR 135.147 – Dual controls required

2019 14 CFR 135.147 – Dual controls required

2016 14 CFR 135.147 – Dual controls required

2015 14 CFR 135.147 – Dual controls required

2014 14 CFR 135.147 – Dual controls required

2010 14 CFR 135.147 – Dual controls required

2009 14 CFR 135.147 – Dual controls required