MUMBAI:

director (operations)

tested positive for alcohol during the mandatory

test in Delhi on Sunday.

He was scheduled to operate a Delhi-London flight. "He failed the

. Currently, he has refused to give blood sample for testing for alcohol," said a source adding that he is being grounded immediately.

A statement from Air India is awaited.

It's not the first time that Capt Kathpalia has been found to be alcohol positive.

According to a complaint filed by Indian Commercial Pilots Association, on January 19, 2017, Kathpalia who was rostered to operate a Delhi-Bengaluru flight proceeded to operate the flight without undergoing the mandatory pre-flight Breathalyser Test. Moreover, even after landing in Bengaluru he refused to undergo a similar test.

When he landed in Delhi later in the day, the ICPA letter alleged that he went to Air India pre-flight Medical examination room and made a false entry in the Pre-Flight Breath Analyzer Examination Register for the flight he had operated.