From departure hall to departure hell ... Thousands of passengers faced cancellations and long delays ... As yet another IT failure grounded parts of British Airways' London operations.
This was Terminal 5 Heathrow, where around half of its mid-morning flights were hit, according to the airport's website.
During the peak holiday season, destinations included Greece, Spain, Italy and Russia.
Other passengers complained of problems checking in online - others still of being stuck on planes unable to take off for hours.
But this is the third in a string of major computer failures.
Last year, BA was forced to cancel flights at Heathrow - Europe's biggest airport.
In May the year before, a massive systems issue left 75,000 customers stranded.
The airline was also hit with a 230 million dollar fine this month for a huge customer data breach.