CHENNAI: A Madurai-bound IndiGo flight was forced to return to Chennai on Friday after the pilot detected a technical snag mid-air, airport officials said.After flying for about half an hour, the pilot of the Indigo Airlines flight detected the snag, and sought permission to fly back to Chennai and land, they said.The aircraft, carrying around 68 passengers, landed safely, and all onboard were deplaned without incident, officials confirmed.There has been no immediate response from IndiGo regarding the incident.Similar incident reported on Thursday as SpiceJet flight returns to Hyderabad minutes after take-off.A SpiceJet aircraft flying from Rajiv Gandhi International Airport (RGIA) to Renigunta was forced to return shortly after take-off on Thursday due to a technical issue.The Q400 aircraft, carrying 80 passengers, returned to RGIA just 10 minutes after departure. According to SpiceJet, the aircraft experienced an intermittent illumination of the AFT baggage door light post take-off.Cabin pressurisation remained normal throughout the flight. However, as a precautionary measure, the pilots opted to turn back and land safely in Hyderabad.