The pilot, a first officer, had been working for a Turkish carrier, which has wet-leased some of its aircraft to the Gurgaon-based airline, SpiceJet said.
"The first officer failed to meet the stringent safety standards and tested positive during a pre-flight medical check for alcohol and was not permitted to operate the flight," a SpiceJet spokesperson said in a statement.
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Notably, aircraft rules prohibit crew members from taking any alcoholic drink 12 hours prior to the commencement of a flight.
The pilot was rostered to operate airline's flight SG-059 (wet-leased aircraft) from Mangalore to Dubai on Tuesday, the spokesperson said adding, he was, however, barred from flying for being found drunk.
He has been suspended and sent back to his country, the spokesperson added.
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