New Delhi, Aug. 19 -- The Directorate General of Civil Aviation (DGCA) is set to make it mandatory for airlines to randomly test more than 25 per cent of their flight crew every year for psychoactive substances through urine samples and this testing requirement would apply to all Indian airlines, top official sources said.

They said the pilot of AI-2379 flight between Phuket and Delhi has been de-rostered. The flight experienced a sudden loss of altitude and some passengers were injured.

From August 13, Air India has been undertaking full screening of all its group pilots for any substances or medications that are not permitted under prevailing regulations, sources said, adding that Air India is submitting these test reports to DGCA whi...