New Delhi, Dec. 5 -- After days of hundreds of flights being cancelled and many more delayed, the Directorate General of Civil Aviation (DGCA) withdrew a contentious provision on pilot working hours that had caused major operational turbulence across airlines.

IndiGo, the country's largest airline, grappled with widespread flight cancellations and delays triggered by pilot shortage triggered by the newly implemented duty-time regulations.

The withdrawn clause, part of the revised Flight Duty Time Limitations (FDTL) norms introduced in late November, had expanded mandatory weekly rest requirements for pilots.

Airlines argued that the sudden change, introduced during the peak winter schedule, exacerbated existing crew shortages and destabi...