New Delhi, Aug 25 - Private carrier Jet Airways Tuesday said the decision of its newly constituted pilots' guild to go on indefinite strike from Sep 7 in protest against sacking of their colleagues was illegal. It also said there would be no disruption in its operations.

'As a responsible corporate body, Jet Airways assures its guests that appropriate action will be taken to ensure that there is no disruption in its operations, and that no inconvenience is caused to passengers,' the airlines said in a statement Tuesday.

The airlines also refused to recognise the newly constituted union of the pilots, the National Aviators Guild.

Over 600 Jet Airways pilots have threatened to go on an indefinite strike from midnight Sep 7 to protest the sacking of two colleagues earlier this month.