New Delhi: At least 137 Air India flights would be delayed on Sunday. The average duration of delay would be of 197 minutes, the airline spokesperson said. Notably, the delay is due to the five-hour shutdown of Air India’s check-in software on Sunday morning which is still causing technical snags.

On Saturday, thousands of passengers were stranded at airports across the world as Air India’s passenger service system (PSS) software, which looks after check-in, baggage and reservation, did not function between 3:30 am and 8:45 am due to a technical glitch. Around 149 flights were delayed on that day because of the software shutdown.

Once an aircraft is delayed in the 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. Air India’s software solution is managed by SITA, global airlines IT services major, which provides its check-in, boarding and baggage tracking technology.

(With PTI inputs)