New Delhi: Air India pilot who flew the Phuket-Delhi flight hit with turbulence on August 4, is believed to have failed a dope test, as the post-flight screening returned positive for psychoactive substances. Although Air India responded to the developments, the airlines has neither confirmed nor denied the claims. Also Read Air India flight suddenly loses 300 ft altitude, 15 injuredBoth flight crew members underwent mandatory psychoactive substance screening following the incident, as required under standard operating procedures. An Air India flight from Phuket, Thailand, to the national capital experienced mid-air turbulence on Tuesday, August 4, and 12 people onboard suffered injuries, according to sources. Earlier in the day, Air India said it was aware that a post-flight screening test was conducted on the pilots in accordance with applicable protocols.