In total, the airline has cancelled 90 flights between Sep 2 and Sep 7.
Other than one long-haul flight on Monday, all cancelled flights are for regional destinations, the airline said.
It expects to fully resume operations by Sep 7.
“Cathay Pacific sincerely apologises for the inconvenience caused and appreciates customers’ patience and understanding.”
It added that its maintenance activity on its Airbus A350 “continues to progress well”.
Of the 15 aircraft identified with engine fuel lines that require replacement, six have already undergone successful repairs and are cleared to operate.
The remaining nine aircraft will be repaired and are expected to resume operations by Sep 7.
Cathay Pacific chief operations and service delivery officer Alex McGowan said: “This was a significant situation for Cathay to manage as the engine component failure was the first of its type to occur on any A350 aircraft anywhere in the world.”
“Completing thorough inspection and maintenance for all A350 aircraft within such a short timeframe has been challenging … I would also like to extend my apology to customers whose travel plans were affected by this incident. At Cathay, the safety of our customers and our people guides every decision we make.
