British Airways continues to work in restoring its computer systems following a huge power failure that caused a huge disruption worldwide for thousands of its passengers.

The airline is near full operational capacity following a power cut to its IT system that resulted in massive flight cancellations at Gatwick and Heathrow.

Thousands of air passengers continued to be displaced, with large numbers remaining overnight at terminals.

BA did not explain what the cause of its problem with power was.

Thus far on Monday, there have been 13 Heathrow short-haul flights that were cancelled

Heathrow told BA passengers who were affected by the cancelled flights not to come to the airport unless their flights were rebooked, or were on schedule to depart today.

Passengers on flights that were canceled were told to use the website of BA to rebook.

At the same time, CEO Alex Cruz posted videos apologizing for what he said was a horrible period for passengers.

However, no one from BA has been available to answer the many questions the media had over the crash of the BA system and the airline did not explain why a backup system had not been in place.

Delays and cancellations affected thousands at both Gatwick and Heathrow. All flights from Gatwick Sunday and about one third from Heathrow, mostly short-haul flights, were cancelled.

Passengers used yoga mats to sleep on that had been handed out by BA and conference rooms were used to provide passengers a place to rest more comfortably.

BA claims a power cut but an expert in corporate IT said even a small flicker of lights should not have taken place in BA’s data center.

Even if power could not have been restored, the Disaster Recovery Plan of the airline should have taken over, but that would in part depend upon a staff that has knowledge of the airlines patchwork, complex systems that have been built up during the years.

Many of the people might have left the airline when the majority of the IT operations were outsourced to India. One IT expert’s theory is that at the time the power returned the airline’s systems were not usable due to the data being unsynchronized.

Basically the airline all of a sudden faced a mass of conflicting records for aircraft, passengers and baggage movement, all the logistics of today’s modern day air travel.