Flight operations at the Indira Gandhi International airport was affected for a while after it was enveloped by the dense fog on Monday.
Over a dozen flights were delayed while one was diverted to Jaipur after fog descended at the airport and visibility dropped to below 50 metres early this morning, an airport official said.
Visibility at the airport was reduced to 1,400 metres at new runway around 10 pm last night forcing authorities to implement safeguard procedures which continued till 9.46 am this morning.
The visibility at the new runway further fell to 500 metres at 3.35 am which led to implementation of Low Visibility Procedure (LVP). The LVP continued for over five hours and was terminated at 9.05 am this morning and the operations returned to normal.
The visibility dropped to below 50 metres between 5.30 and 6.30 am. Also the runway visibility dipped to a low of 100 metres during the period.
A total of 70 (43 domestic and 27 international) flights operated during the LVP of which 48 used CAT I while six used CAT II instrument landing system. Thirteen flights operated under CAT III A and three others under CAT IIIB instrument landing system.
Fog has been affecting flights at the IGI airport since December last during which over 1,000 flights had been delayed while over 150 had been cancelled.