Air India on Thursday said all pilots will be screened for substance abuse before departures, days after the pilot-in-command (PIC) of a Phuket-Delhi flight that suddenly lost altitude last week tested positive for marijuana. The incident took place last week. (ANI Video Grab) Twenty-four people, including four crew members, suffered injuries after the Phuket-Delhi AI2379 flight dropped 300 feet during cruise on August 4. An initial statement from Air India had cited turbulence as the reason. The PIC later tested positive for marijuana in a confirmatory drug test. In an email to all its employees reviewed by HT, the Tata Group-owned airline stressed the need to go beyond the regulations prescribed by the Directorate General of Civil Aviation (DGCA) “ to uphold the highest standards of safety and professionalism, and to provide reassurance to our passengers, stakeholders and the community at large.” “We have decided to undertake a full screening of all Group pilots for any substances or medications that are not permitted under prevailing regulations. This testing is mandatory and will start today, 13 …