An Airbus A-320 NEO airliner operated by carrier GoAir had a serious problem with one of its engines on Monday with some passengers reporting a fire in the tailpipe of the engine, the government's aviation watchdog, the Directorate General of Civil Aviation (DGCA) has confirmed. The aircraft, which was flying to Kolkata from Guwahati and carrying 132 passengers, returned just a little over 10 minutes after take-off.