Three other IndiGo A320Neo planes have been on the ground since February following similar engine failures.
The DGCA has also ordered the airlines not to refit the engines even though there are spares in their inventories.
"IndiGo has cancelled certain flights due to the grounding of our aircraft further to the DGCA directions which has been issued in the interest of safety", the airline said. Immediately after getting this directive, IndiGo - which at that time had 32 Neos - had grounded three Neos which had both engines of this specific variant.
The DGCA also grounded such aircraft of another domestic carrier GoAir. IndiGo operates about 1,000 flights daily.
Most of the initial 88 aircraft are operational and have clocked more than 57,600 flight hours over 142 routes, the report added.
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The aircraft were grounded after an IndiGo flight to Lucknow was forced to make an emergency landing in Ahmedabad due to the latest in a series of engine problems on the super fuel-efficient aircraft.
IndiGo said these were related to non-detection of chip, carbon seal lining or combustor chamber lining in Pratt & Whitney 1100 series engines. All defective components would be replaced by early June, requiring some planes to fly with one affected engine for nearly three more months.
As per practice, the defective engines were replaced with other engines overnight. The flight crew carried out actions as per SOP and landed back at Ahmedabad following precautionary measures.
"We must give the highest priority to safety".
The decision on Monday left hundreds of passengers stranded at airports, PTI reported. As many as seven departures were delayed. "We are altering flight schedules and communicating the same to those affected by the last minute changes; we are making all possible arrangements to minimize the impact", GoAir said in a statement.