Indian budget airline Go First is running out of engines for its 52 Airbus A320neo. Therefore, you already have to keep 12 units on the ground. The background is that numerous Pratt & Whitney PW1100Gs have not yet been returned from overhauls or retrofits.
The matter has been dragging on for some time, as the local newspaper "Economic Times" reports that the affected engines were handed over to the manufacturer in January 2022. It was hoped that a replacement would be received in the meantime, but this was not possible for reasons that were not specified. The return of the engines overhauled by P&W was delayed. It is currently assumed that these will probably arrive in mid-July 2022. The airline will be unable to operate around a fifth of the A320neo fleet by then.
Go First is the new name of the low-cost airline Go Air. It currently operates 52 Airbus A320neo and five A320ceo. The Indian aviation authority insists on overhauls or retrofits of the PW1100G engines. According to CH-Aviation.com, competitor IndiGo Airlines completed this step in August 2020. The Indian Directorate General of Civil Aviation (DGCA) banned the non-converted PW1100G from operating.