<h1>IndiGo cancels 160 flights amid DGCA probe into rostering, manpower and duty/rest norm compliance issues.</h1> A regulatory investigative panel was appointed to probe widespread operational disruptions after roughly 160 flight cancellations, with a mandate to assess manpower planning, rostering systems, and the airline's preparedness to implement the duty period and rest norms effective November 1; the regulator also removed four Flight Operations Inspectors in response to the disruptions.