Legally available marijuana in some countries adds to airline woes

The legal availability of marijuana for medicinal or recreational use in countries like Thailand and Amsterdam poses challenges for airlines operating in those regions. Unlike breathalyzer tests, detecting psychoactive substance consumption in flight crew is complex. To deter consumption, airlines must increase random testing, as these substances can linger in the body longer than alcohol.

International Civil Aviation Organisation (ICAO) guidelines stress that operating a flight under the influence of psychoactive substances can render personnel unable to perform their duties safely. A US carrier incident involved an off-duty pilot on the jump seat attempting to shut down engines after consuming psychedelic mushrooms and sleeping less than 48 hours.

While ICAO regulations address testing for psychoactive substances, many airlines struggle with inconclusive test results when medicine is involved. In India, the Directorate General of Civil Aviation (DGCA) requires commercial airlines to test 10% of their flight crew and air traffic controllers annually. Despite awareness campaigns, self-reporting addiction remains low due to social stigma, making random testing the most effective deterrent against impaired flight operations.