Budget carrier IndiGo's woes have further compounded with as many as five of its aircraft--- three A320 Neos and two A320 Ceo (current engine option) planes--facing glitches in the last 24 hours, resulting in the grounding of an A320 Neo. With this, IndiGo now has as many as 12 A320 Neos on the ground. As of now, the Gurgurgram-based carrier has been grappling with A320 Neos powered by Pratt & Whitney engines since last June, with 11 of them already grounded due to safety concerns.