Vistara, a joint venture between Tatas and Singapore Airlines, began operations in January this year but almost an average of 40 per cent seats in its aircraft have remained vacant.
"It has been a very short period for the airline. (It is) very early days. We are happy generally the way things have gone... We have been operating in a very competitive environment," Menon told reporters here.
Vistara is the only domestic airline to have introduced this particular segment which is positioned between 'Business' and 'Economy' classes.
To a query about having three classes for passengers in its flights, Menon said, "actually there is very good response... There has been a steady growth in occupancy".
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During January-August period, Vistara's average load factor -- an indicator of seat occupancy -- hovered around 60 per cent. In August, it stood at 62.9 per cent.
Observing that 5/20 is a bad rule, Menon said there is no reason why the government cannot change it when previous governments have changed policies.
Under 5/20 norms, only local carriers having a fleet of 20 planes and five years operational experience are allowed to fly overseas. The government is discussing the viability of doing away with the rule, which restricts new carriers such as Vistara and AirAsia India from flying abroad immediately.
While a final decision on whether to scrap 5/20 rule is yet to be taken, there is a clear divide over the issue between established players and start up airlines with the latter group seeking removal of the norm to fly abroad.
He, however, said that Vistara is a long term player and its business plan would not be affected even if the government decides to continue with the 5/20 rule.