The Directorate General of Civil Aviation( DGCA) on Friday said three A320 Neo (new engine option) planes of no-frills airline GoAir are grounded due to Pratt & Whitney (PW) engine issues.

In a status report submitted on PW powered Neos, the aviation regulator said it has ensured the safety of aircraft operations and is not compromised at any stage.

While the three aircraft are awaiting replacement of engines, the watchdog has referred certain cases of "engine vibrations" and "low-pressure turbine blade damage" to P&W.

"In addition to previous issues, there have been few cases of engine vibrations, low-pressure turbine (LPT) blade damage, Airlines have referred the matter to the engine manufacturer," DGCA said.

IndiGo and GoAir together have 84 A320 neo planes fitted with P&W engines in their fleet.

Some of these aircraft have suffered engine issues and over a period of time, various regulatory actions have been initiated to address the problems.

"Post induction of the PW 1100G-JM engine into service, following technical issues have been experienced on these engines worldwide: distress in combustion chamber, oil chips detection indication due to wear of No.3 bearing seals; and HPC (high-pressure compressor) rear knife edge seal fitted on engines with serial number 450 and above, which were introduced in service from October 2017 onwards," the notice added.

The regulator said it would consider issuing necessary instructions upon receipt of the report from the engine manufacturer.

With inputs from PTI.