Sri Lanka, Aug. 10 -- The captain who operated Air India's turbulence-hit Phuket-Delhi flight on August 4 has reportedly tested positive for psychoactive substances in a post-flight dope test.

The pilot, in his thirties, has been grounded temporarily. Air India stated they were not aware of the results of the dope test.

According to sources, the test for psychoactive substances was conducted by the staff at Delhi airport on the directions of the Aircraft Accident Investigation Bureau (AAIB), which operates under the Civil Aviation Ministry. The AAIB is authorised to order such tests in case of flight accidents.

The incident involving turbulence which caused the flight to go down by 300 feet is being treated as an accident as 17 passen...