Pieter Elbers resigned as IndiGo's CEO after a series of operational failures, including a 14-hour flight delay and widespread cancellations. His departure follows a December meltdown where staff rostering errors stranded thousands of passengers. Elbers led the airline's expansion to 50 international routes but posted quarterly losses amid rising fuel costs. Bhatia now leads interim as the board searches for a successor, with the choice potentially resetting IndiGo's growth strategy. The airline holds 900 aircraft orders and faces pressure to maintain its 60% domestic market share against Air India's struggles.