Airbus and P&W are working in close cooperation and would be swiftly communicating on the way forward in relation to aircraft deliveries, the filing added.
On Friday, Europe's air safety authority EASA issued an "emergency airworthiness directive" saying that "several occurrences of inflight shutdown and rejected take-off have been reported" with the single-aisle aircraft. It put the European planemaker on the map three decades ago, allowing the company to go from a speck in Boeing Co's rear-view mirror to powerful equal in what has become a de-facto duopoly in the global civil-aircraft market.
Airbus has informed IndiGo that all A320neo deliveries are on hold until further notice following the discovery of a new issue with the Pratt & Whitney PW1100G engine, the carrier's parent company InterGlobe Aviation has disclosed.
The P&W Purepower GTF engines while key to the improved efficiency of these aircraft, had a long string of problems during testing and in service.
EASA on February 9 issued an emergency airworthiness directive (EAD), warning of a potential "dual engine" inflight shutdown on A320neo-family aircraft powered by Pratt & Whitney PW1100G geared turbofan (GTF) engines.
Bloomberg News reported Sunday that IndiGo, the low-priced airline in India, disclosed three in-flight shutdowns and said pilots have had to turn back before taking off in three other instances. But Airbus has still parked around 30 otherwise completed aircraft at its manufacturing sites in Toulouse and Hamburg awaiting engines.
Airbus said 113 of the jets at 18 airlines use the Pratt geared turbofan engine, but not all are affected.
Airbus has traditionally offered two engine options on the A320, and the company maintained that approach on the neo.
Earlier overheating problems on the Pratt engines have interfered with A320neo deliveries since early a year ago.
In a statement issued on Saturday, IndiGo confirmed that there are some issues with the engine of the said aircraft and keeping the safety as top priority, it has decided not to fly these three aircrafts.
"Our precautionary measure of grounding the three aircraft resulted in cancellations of some of our flights". Aircraft with one affected engine are restricted from certain extended-range flights.
"We have identified the potentially affected engines and communicated with our customers", Pratt & Whitney said in a statement.