A radar failure at New Delhi's Indira Gandhi International Airport has delayed a number of flights.
The radar screens went blank forcing airport authorities to schedule flights manually, disrupting the schedule.
An IBN-Live report says that the scheduling of the flights will have to be done manually till the error is rectified.
The reason behind the radar failure is still not known, and airport authorities called it a technical snag. Further details on the matter are awaited.
The airport saw similar radar failures in 2012 and in 2010.
Radar screens give complete details of aircraft flying in the vast north Indian plain and the failure raises concerns over the country's airspace security being compromised, the IBN-Live report said.