New Delhi, Aug 29 : An IndiGo flight from Madurai landed safely at the Mumbai airport on Tuesday despite one of the aircraft's engines shutting down. Given that twin-engine planes can safely operate on a single engine, the Airbus A321 safely landed in Mumbai. 'IndiGo flight 6E-2012 operating from Madurai to Mumbai had a technical issue prior to landing in Mumbai. The pilot prioritised the landing in Mumbai. The aircraft is held at Mumbai and will be back in operations after necessary maintenance. We regret the inconvenience caused to the passengers,' said the airline spokesperson. Tuesday's development comes after the aviation regulator, DGCA had said earlier that subsequent to the announcement made by Pratt & Whitney regarding material anomalies on the PW1100G engines worldwide affecting approximately 200 engines, the aerospace manufacture issued the Service Instructions (SI) enlisting the serial numbers of the engine series which are required to be removed for performing Angle Ultrasonic Scan Inspection during shop visit and accordingly are required to be removed before September 15. /IANS