After grounding of planes due to trouble with Pratt & Whitney engines, IndiGo has chosen P&W's rival CFM International for LEAP1-A engines to use in its Airbus’ fuel-efficient A320neo family aircraft, reported Business Standard, quoting sources.

The deal is likely to be announced during the Paris Air Show that will begin on June 17 and deal is valued at $8.12 billion based on the listed price at the report said. However, airlines pay much less than what the listed price is.

The move by IndiGo, the largest customer of A 320neo aircraft, is also seen as a setback for P&W’s geared turbofan engine programme, the daily said.

While refusing to comment on the deal, a CFM spokesperson told the daily that the company was looking to strengthen its position in the subcontinent by winning customers for the LEAP engine.