The European Aviation Safety Agency has issued an air worthiness directive about Airbus's A350-941 aircraft, warning that a problem could lead to an engine explosion under certain conditions if not corrected.
The Cologne, Germany-based agency, said that Airbus has already come up with a fix and the directive, which goes into effect Thursday, orders that it be implemented on all affected planes.
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The problem involves the hydraulic fluid cooling system in the fuel tanks. EASA said a failure discovered with the hydraulic "engine driven pump" could cause a fast temperature rise.
If not corrected, EASA said the condition "could lead to an uncontrolled overheat of the hydraulic fluid, possibly resulting in the ignition of the fuel-air mixture in the affected fuel tank."