Cathay Pacific cancelled 24 return flights through the end of Wednesday to give it time to inspect its fleet of 48 Rolls-Royce powered A350s after a part failed on one of its A350-1000 wide-body planes minutes after take-off from Hong Kong on Monday.
Data from flight tracking service FlightRadar24 showed other major operators of the A350-1000 and the smaller, more popular A350-900 appeared to be flying their aircraft normally on Tuesday.
Tokyo-based Japan Airlines (JAL), which has five A350-1000s that are less than a year old, said it had asked Rolls-Royce for more information and had not stopped A350 flights in the meantime.
"If the engine manufacturer takes any further action, we will respond accordingly," a JAL spokesperson said.
Rolls-Royce had not yet issued a directive to airlines regarding possible inspections, according to an industry source who was not authorised to speak publicly about the matter.
The engine manufacturer said in it was aware of the incident and was committed to working closely with Cathay Pacific, Airbus and authorities conducting an investigation.
Cathay Pacific has not specified which engine component failed, but the carrier said it was the "first of its type to suffer such failure on any A350 aircraft worldwide".
A person familiar with the matter told Reuters the incident involved a problem with a fuel nozzle inside a XWB-97 engine, the Rolls-Royce model used on the A350-1000.
Experts say such problems are rare but, barring a deeper flaw, generally raise fewer alarms than the failure of one of the major rotating parts such as a turbine blade.Â
However, any widespread further inspections could be disruptive to airlines.
Airbus said it was in contact with Rolls-Royce and Cathay Pacific and offering "full technical support".
Taiwan's China Airlines, which operates 15 A350-900s but no A350-1000s, said its fleet did not use the affected engines so its operations would not be affected.
"The company will continue to pay attention to the instructions of the original manufacturer and take the initiative to arrange for testing operations to ensure the safety of aircraft operations," it said in a statement.
Although the part failure occurred on one of its 18 A350-1000 jets, Cathay Pacific said it was also inspecting its 30 A350-900s as a "precautionary measure".
The airline said it had "identified a number of the same engine components that need to be replaced" but did not say on which model aircraft.
About 88 A350-1000 jets are in operation worldwide, according to Swiss aviation intelligence provider ch-aviation.
The top six operators are Qatar Airways with 24 planes, British Airways with 18, Cathay Pacific with 18, Virgin Atlantic with 12 and Etihad Airways and JAL with five each.
Qatar Airways, British Airways, Virgin Atlantic and Etihad did not immediately respond to requests for comment.
