DGCA, on Monday asked IndiGo not to use such A320 Neo planes which are fitted with PW engines already used for over 3,000 hours, or face grounding of aircraft, officials said. A DGCA official said there are 16 aircraft in IndiGo's fleet in which both the Pratt and Whitney (PW) engines have been used for more than 2,900 hours.

from Times of India https://timesofindia.indiatimes.com/business/india-business/replace-a320-neo-plane-pw-engines-that-have-been-used-for-more-than-3000-hours-dgca-to-indigo/articleshow/71794564.cms