10 flights were cancelled due to operational reasons. Air India flight AI 996 from Dubai was diverted to Mumbai at around 4.45 AM due to operational reasons.
Fog started to descend at the airport around midnight and general visibility dropped to below 50 metres and runway visibility to 50 metres at the third runway around 3 AM, while visibility was around 1000 metres on main runway (28/10), airport officials said.
But the situation changed within 40 minutes and visibility at main runway dropped to 125 metres at one end forcing the authorities to implement low visibility
The visibility remained around 100 metres at the third runway till 6 AM, which left it operational for arriving flight as the minimum visibility for take-off is required 125
metres and 150 metres for small and big aircraft.
Operations at the airport had remained normal for the past two days even as it witnessed moderate to shallow fog.