IndiGo Airlines (6E, Delhi International) has finalized an agreement with Pratt & Whitney affiliate International Aero Engines regarding “customized compensation” over aircraft groundings which have affected the airline’s vast fleet.

According to a stock exchange filing, IAE will compensate the airline’s parent InterGlobe Aviation for an undisclosed amount due to the unavailability of P&W engines. IndiGo did not reply to a request for comment from ch-aviation sent during business hours by the time this article was published.

Among IndiGo’s in-house fleet of 359 aircraft, eighty A320-200Ns and A321-200NX are currently inactive, all with P&W engines, ch-aviation fleets shows.

The groundings have hit India’s largest airline as it seeks further growth, both in routes and fleet. It currently has 980 aircraft due, which includes five ATR72-600s, thirty A350-900s, sixty-nine A321-200NY(XLR)s, 222 A321-200NX, 390 A321-200Ns, 264 A320-200Ns, and three A320-200s.