An investigation found that an engine fire on a Cathay Pacific Airbus A350 was caused by a fuel leak linked to defective fuel hoses. The engine, made by Rolls-Royce, detected the issue mid-flight, prompting a safe return to Hong Kong. The incident raised safety concerns over Cathay Pacific's fleet, leading to inspections and an Emergency Airworthiness Directive from the European Union Aviation Safety Agency. Rolls-Royce and Cathay Pacific are supporting the ongoing investigation.