Mumbai, March 11 -- IndiGo and Air India Group have sought a temporary exemption from pilot duty hour requirements from the Directorate General of Civil Aviation (DGCA) after the West Asia conflict lengthened some international routes, pushing flight times beyond limits that normally require an additional pilot, according to a government official familiar with the matter. Under India's Flight Duty Time Limitation (FDTL) rules, if a single-sector flight exceeds 10 hours of flight time-the maximum permitted duration for a two-pilot crew-airlines are required to deploy an additional pilot. This means operating the flight with an augmented crew consisting of a captain and two first officers. The aviation safety regulator is conducting a safety ...