Recent findings by Hong Kong aviation investigators have shed light on a concerning engine problem that led Cathay Pacific to ground its entire fleet of Airbus A350 jets for inspection earlier this month. The issue, which caused the airline to cancel numerous flights in early September, was initially identified after a Zurich-bound flight had to return to Hong Kong shortly after takeoff on September 2.
While Cathay Pacific had previously acknowledged an engine component failure on the affected aircraft, the exact nature of the problem was not disclosed. However, the Air Accident Investigation Authority (AAIA) in Hong Kong revealed that during its inspection, it discovered a discernible hole in the fuel hose, accompanied by black soot indicating potential signs of a fire.
The AAIA highlighted the risk of fuel leakage through the ruptured hose, which could potentially lead to a fire spreading to other parts of the engine. The authority emphasized that if left undetected and unaddressed, the situation could escalate into a more serious engine fire, causing extensive damage to the aircraft.
Further concerns were raised as burn marks were found under the aircraft's reverse thrusts, which play a crucial role in slowing down the plane after landing by redirecting exhaust. The preliminary report issued by the AAIA prompted a recommendation to the European Union Aviation Safety Agency to urge Rolls-Royce, the engine manufacturer for the A350 jets, to develop ongoing airworthiness information regarding the identified problem.
In response to the incident, Cathay Pacific conducted a comprehensive inspection of its 48 A350 aircraft and replaced components on 15 of the planes. The A350 family, equipped with Trent XWB turbofan engines from Rolls-Royce, consists of two models that are widely used for long-haul flights.
As the investigation continues, both Cathay Pacific and Rolls-Royce have been contacted for further comments on the matter.
