"I liked to fly. It is painful to accept the present situation and I am determined to fight against the decision of the management," he said.
The purser, Victor Joynath De, refused to trim his moustache in compliance with recently introduced personal conduct rules.
Mr De said he was proud of his moustache which has taken 25 years to grow and now stretches prominently across both cheekbones.
"I never dreamed of trimming it. All the time I worked for the airline, my moustache attracted many adoring eyes inside the plane and on the ground," the AFP news agency quoted him as saying.
But Indian Airlines takes a different view.
It argues that his prized asset is in fact a health risk, especially with him frequently handling food.
The steward - who has worked for Indian Airlines for over 20 years - has now been grounded and is doing a desk job at Calcutta airport in which he deals with passenger complaints.
Unhygienic
Mr De said he was determined to fight against the management decision and has initiated legal proceedings against Indian Airlines.
"I liked to fly. It is painful to accept the present situation and I am determined to fight against the decision of the management," he said.
A spokesman for the airline said Indian Airline's personal conduct code of 1998 does not allow the display of moustaches which could be unhygienic.
The spokesman said that regulations had to be adhered to and that the airline had no choice but to ground Mr De after he repeatedly refused to trim his moustache.
The spokesman said that some passengers could be unnerved by such a striking facial feature.
Mr De is being backed by his wife Chanda, who is an Indian Airlines airhostess.