BREAKING NEWS is the crash of a Helios Airways Boeing 737 at 09020 GMT Sunday morning north of Athens on a planned route from Larnaca to Prague via Athens. All 121 on board are believed lost and first reports indicate that a very rapid pressurisation problem caused a loss of consciousness of the pilots. With the cockpit door sealed under current security regulations it would have proved difficult for passengers or cabin staff to attempt to break in even if they knew of the flight deck crew's problems. Established in 2000 Helios has been accident free until this time although a pressurisation problem was experienced last December resulting in an emergency landing at Larnaca. It is not known at this time if it is the same aircraft.