THERE are fears of a British Airways flights chaos after a disastrous cyber security upgrade locked global staff out of company systems.
An unannounced password switch means pilots and crew are struggling to access plans and rosters.

Union bosses warned of school holidays disruption as baffled staff were ordered to change their access codes and complete a 40-minute online interview with teams in .
But workers can only upgrade their accounts from a desk at on weekdays between 9am and 5pm.
And with more than 50 per cent overseas, the timetable is in peril.
The unannounced “BSafe password change”; has left staff automatically locked out of all company systems, including flight information, service documents, staff travel, email, training schedules and rosters.
Those affected have been told to email managers but cannot access work emails.
The Sun understands the BA manager in charge of the botched password roll-out is now on holiday and the process cannot be halted.
A union spokesman warned airline staff in a message seen by The Sun: “Out of nowhere BA have changed access to Employee Self Service, completely overlooking that crew along with pilots are a remote workforce.
“Well over 50 per cent of BA employees either work or live overseas. It’s an old saying ‘you don’t fix what isn’t broken’ â BA have done exactly that with disastrous results.”;
The Sun understands the upgrade was requested by BA’s Spanish owner IAG over fears of an “imminent ”;.
BA said: “We’ve been making some system improvements to boost our online security. This has had no impact on our operation or customers.”;
