An IndiGo flight, 6E 2012, en route from Madurai to Mumbai, encountered an engine issue and safely landed in Mumbai. The Airbus A321's Pratt & Whitney engine shut down mid-flight, prompting the landing. IndiGo confirmed the technical problem and assured passengers of necessary maintenance. The incident is one of many involving PW engine snags that grounded around 40 of IndiGo's planes. Delhi Airport's congestion, caused by grounded planes, prompts flight cuts ahead of the G20 event in September.