A Lucknow-bound Kingfisher Airlines flight had to be grounded here on Thursday following a bomb scare. The Air Traffic Control (ATS) asked the Mumbai-Lucknow flight to ground after receiving an anonymous phone call informing about a bomb planted in the plane. The flight had 166 passengers on board. The aircraft after being grounded,was taken to a remote bay and all passengers were deplaned and a detailed search was conducted. The flight,IT-3149 was scheduled to take off from the Mumbai''s domestic airport at 4.45 p.m. when the anonymous call was recieved.