Two more Air India pilots have not cleared preliminary drug tests and have been de-rostered while their final test results are awaited, sources said.
Air India flight AI2379 recorded multiple hydraulic, autopilot and flight-control warnings before a sudden 300-foot altitude loss on August 4.
Severe turbulence on Air India flight AI2379 from Phuket to Delhi injured 17 people. Four cabin crew members remain under treatment as the DGCA investigates.