In all, IndiGo and GoAir will get 180 modified engines both as replacement on planes already in their fleet and on new A320/321 Neos delivered to them by May-end. While 90 of the modified engines were to come as new deliveries and replacement by February-end, the remaining half is expected by May 31. IndiGo at present has 106 Neos and GoAir has 43 Neos. Together the two Indian carriers have about 25% of the 585 A320 Neo family of aircraft with PW 1100 series engines, the official added.
“A total number of 56 (PW unmodified engine) failures (on A320 Neos) have been reported globally, out of which 26 failures — 22 by IndiGo and four by GoAir — have been reported by Indian carriers, amounting to about 46%,” said a senior DGCA official.
(Graphic source: DGCA)
“IndiGo got its first A320 Neo in March 2016. GoAir got its first A320 Neo in May 2016… Post induction of the aircraft into service, technical issues were experienced on these engines worldwide. Most of these issues have been suitably addressed by the manufacturer except third stage low pressure turbine (LPT) failures…. PW developed a more robust third stage LPT which was installed on new engines from June 2019,” said the official.
“PW is in the process of setting up an MRO in India in collaboration with Air India (engineering arm) for replacement of third stage LPT at (the latter’s) Mumbai facility. This will significantly reduce the time taken for the upgrade. The facility is expected to be operational by the end of February 2020,” the official added.
“DGCA is continuously monitoring the performance of these engines and taking appropriate action to address the issues. Manufacturer has been directed to ensure sufficient availability of spare engines for Indian operators to prevent grounding of aircraft due to removal of engines,” he further said.