European regulators have widened the number of Rolls-Royce Trent engines affected by a potential fuel hose defect, in an updated directive issued 19 September following an engine fire on a Cathay Pacific Airbus A350-1000.

Hong Kong's investigators highlighted that it had recommended EASA to mandate Rolls-Royce to issue inspection instructions of the part.

An engine fire on a Cathay Pacific Airbus A350 earlier this month was the result of a fuel leak and could have caused extensive damage to the plane, according to investigators. Hong Kong’s flagship airline grounded planes after being forced to turn a flight around a couple of weeks ago because of an "engine component failure".

Investigators have found that a ruptured fuel manifold hose on the Rolls-Royce Trent XWB-97 engine of a Cathay Pacific Airbus A350-1000 led to an in-flight engine fire that could have caused "extensive damage" if not addressed promptly.

A probe by Hong Kong's aviation accident investigation agency revealed Cathay Pacific's Airbus A350 engine failed in-flight due to a ruptured fuel hose which also showed signs of a fire, the agency's report stated on Thursday.

A cleaning process leading to fuel hose degradation during refurbishment may have caused a recent Airbus A350 engine fire that triggered dozens of Cathay Pacific flight cancellations this month, the EU aviation regulator said Thursday.

A probe by Hong Kong's aviation accident investigation agency revealed Cathay Pacific's Airbus A350 engine failed in-flight due to a damaged fuel hose which also showed signs of a fire, the agency's report stated on Thursday.