Kolkata: An aircraft of a private airline made an emergency landing at the Netaji Subhas Chandra Bose International (NSCBI) Airport in Kolkata on Monday night, after smoke was traced inside the cabin. While approaching the NSCBI Airport, smoke started spreading further inside the aircraft.Sources informed that on Monday night at around 10:40 pm, the Air Traffic Control (ATC) of NSCBI Airport received an SOS message from a flight coming from Ahmadabad via Jaipur. The pilot informed that due to some unknown reasons, smoke spread all over inside the aircraft. Passengers became panic stricken due to the smoke and some even had breathing problem. Also Read – Rain batters Kolkata, cripples normal lifeImmediately, ATC officials arranged for an emergency landing, with all the necessary system such as fire tenders, ambulances and other logistics in place. All other flight operations were halted for the time being. A few minutes later the flight safely landed at the airport. The 139 passengers on board were evacuated using a ‘slipper’ through the emergency exit. After evacuation, the aircraft was quarantined and taken to a safe distance. Later, engineers were called to check the aircraft. But no fault could be detected. Later, the flight was grounded till an overall check. According to airport sources, it would be checked again if there is any glitch. According to sources, engineers are working to detect the problem in the aircraft.