The spokesperson said total 149 flights were delayed on Saturday because of the software shutdown.
When asked about its effect on Sunday, he said, "Due to delay in first sector, 137 flights are delayed by 197 minutes (average)."
Once an aircraft is delayed in first sector, it is bound to be delayed in the second and third sectors as well. An aircraft generally goes from one sector to another during the day. For example, while Delhi-Mumbai is one sector, Mumbai-Bengaluru is another sector and Bengaluru-Chennai is the third sector.
The average number of flights that Air India group, which also includes subsidiaries Alliance Air and Air India Express, flies daily is 674.