Several flights were delayed on Friday at Indira Gandhi International airport at Terminal 3 in New Delhi when the computerized system used for checking of passengers collapsed for about an hour. According to the airport official, computerized checking in system at terminal-3 of the IGI airport collapsed at around 4.30 pm and it could be restored after an hour. During this period, checking-in process of the airlines was badly hit and the exercise had to be carried out manually.