A Thiruvanathapuram-bound Spicejet flight was rescheduled this morning in Chennai following a technical problem. Around 40 passengers were on board the flight when the snag was detected minutes before take-off, airport sources said. The passengers are scheduled to fly later in the day by another flight. This is the third such instance when a flight has been delayed in the past three days.More than 190 passengers of a Kuala Lumpur-bound Malaysian Airlines flight were asked to disembark shortly before take-off yesterday following a technical problem.On Sunday, a Jet airways flight was rescheduled followinga technical snag.