The DGCA had also grounded such aircraft of another domestic carrier GoAir. It has also asked the two airlines not to refit these aircraft with other engines in their inventory.
Interestingly, this would not be the first time both Indigo and GoAir have come across a engine failure issue. "The remaining 31 A320 neo with IndiGo and GoAir are fully operational and there is no safety issue with them", the statement added. The directive followed instances of the engines shutting down during flights and rejecting take-offs involving the A320neo family aircraft. In the month of February, three IndiGo A320Neo planes were grounded because of similar engine problems.
Pratt spokeswoman Jenny Dervin said the company is working closely with customers in India "to minimize disruption". "We do not consider this safe and technical analysis is underway". However, all the 186 passengers safely landed.
Minister of state for civil aviationJayant Sinha told a TV channel that the aircraft were grounded as soon as there a safety issue in the engines was detected.
Prashant Menon, a passenger who is travelling from Thiruvanthapuram to Bengaluru tweeted, "Indigo, considering today's incident, should I cancel my flight scheduled for this Friday". Airbus now offers two engine choices for its Airbus A320 Neos - PW1100G-JM manufactured by Pratt and Whitney and the CFM LEAP-1A engines made by CFM. Operators now using the A320neo have confirmed saving around 15 percent fuel-burn per seat.
Pratt engines were considered to be the most reliable world over - till it launched the geared turbofan model previous year.
IndiGo shall have a total of nine A-320 Neo aircraft on ground.
As per practice, the defective engines were replaced with other engines overnight.
DGCA has grounded A320 neo planes hours after an A320 neo aircraft of Indigo suffered engine failure mid-air and had to make an emergency landing at Ahmedabad airport. The flight was suppose to halt in Lucknow. "Safety is our top priority", IndiGo said in a statement. Planes operated by Vistara and Air India have CFM engines while those operated by IndiGo and GoAir have PW1100 engines.
"Since the grounding is with immediate effect, it has sent our operations for a toss". The carrier operates 230 flights per day.