Process of detecting consumption of psychoactive substances is difficultNEW DELHI: The legal availability of marijuana for either medicinal or recreational use in places like Thailand and Amsterdam has made life difficult for airlines flying there. The reason: Unlike simple breath analyser tests for checking if the crew is tipsy, the process of detecting consumption of psychoactive substances is difficult. This off duty pilot had reportedly taken psychedelic mushrooms two days before the incident and hadn't slept in 48 hours. “But given the easy availability of psychoactive substances, we need to make the consequences a bit tougher and act as deterrent. Under current DGCA rules, all scheduled airlines commercial and air navigation service provider need to test at least 10% of their flight crew members and air traffic controllers every year.