Departure at high noon into Mumbai's blue September skies as IndiGo's brand new A321 heads to Mangalore as 6E5399. Built as an A321-251NX, this aircraft is equipped with CFMI LEAP-1A32 engines, as opposed to some IndiGo A321s modified to 252NX with LEAP-1A30 engines. Successor to the CFM56-5 series, these offer 15% improvement in fuel efficiency with their 18 Carbon Fibre Reinforced Polymer (CFRP) blades. The aircraft was delivered on 16 Sept 2022.