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Transport Canada Bans Cannabis Use for Flight Crews 28 Days

8/15/2026

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Summary

Story summary

Transport Canada bans cannabis use for flight crews and air-traffic controllers for 28 days before duty.
The ban follows a 2026 NTSB study showing 52.8% of pilots killed in 2018-2022 civil-aviation accidents had one drug, with THC driving the rise.
A 2022 UC San Diego trial led by Thomas Marcotte found smoked THC reduced driving performance and that impairment could not be predicted from THC content, experience or blood levels.

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Story summary

Transport Canada bans cannabis use for flight crews and air-traffic controllers for 28 days before duty.
The ban follows a 2026 NTSB study showing 52.8% of pilots killed in 2018-2022 civil-aviation accidents had one drug, with THC driving the rise.
A 2022 UC San Diego trial led by Thomas Marcotte found smoked THC reduced driving performance and that impairment could not be predicted from THC content, experience or blood levels.