Overview
• Operator: Cathay Pacific
• Aircraft Model: Boeing 777-300
• Registration: B-KQV
• Flight Number: CX-233
• Route: Hong Kong (HKG) → Milan Malpensa (MXP)
• Date: 6 March 2025
• Passengers & Crew: Unknown
• Injuries: None
• Aircraft Status: Grounded at Lanzhou (LHW)
Incident Summary
While en route at 9,200 meters (FL301) about 130 nautical miles northwest of Lanzhou, China, the crew experienced a technical failure in the left-hand GE90 engine.
✅ Crew shut down the engine as a precautionary measure.
✅ Aircraft descended to 8,200 meters (FL270) for a more manageable altitude.
✅ Diversion initiated to Lanzhou (LHW).
✅ Safe landing on runway 18 about an hour after the failure.
Operational Impact
• Flight CX-233 was cancelled at Lanzhou due to the engine issue.
• The return flight was also cancelled, affecting Cathay Pacific’s scheduling.
• Passengers were likely rebooked on alternate flights.
• Engine failure investigation initiated by airline engineers.
Possible Causes of Engine Shutdown
The General Electric GE90 is one of the most powerful jet engines in the world, but failures can occur due to:
1️⃣ Compressor Stalls or Surge – Disruptions in airflow can lead to a temporary or permanent loss of thrust.
2️⃣ Fuel System Issues – Fuel line blockages or contamination affecting combustion.
3️⃣ Oil Pressure Loss – A drop in oil pressure may force an engine shutdown to prevent damage.
4️⃣ Sensor Malfunctions – False readings could lead to an unnecessary shutdown as a precaution.
5️⃣ Foreign Object Damage (FOD) – Ingestion of debris or ice affecting engine components.
Crew’s Response & Safety Actions
✅ Recognizing engine failure quickly and shutting it down safely.
✅ Descending to a lower altitude (FL270) to reduce engine strain and ensure safe operations.
✅ Diverting to the nearest suitable airport with full emergency services.
✅ Executing a controlled and safe landing in Lanzhou.
The crew followed standard operating procedures (SOPs), ensuring passenger and aircraft safety.
Investigation & Next Steps
• Cathay Pacific engineers will inspect the GE90 engine for faults or damage.
• Chinese aviation authorities may conduct a review of the incident.
• Potential engine replacement or repair before the aircraft can be returned to service.
• Passengers likely provided alternative travel arrangements.
Conclusion
This engine failure incident was well-handled by the crew, ensuring a safe outcome. The quick engine shutdown and diversion to Lanzhou prevented any escalation, and an investigation is now underway to determine the root cause.
Disclaimer
“This report is based on publicly available information as of 6 March 2025. While every effort has been made to ensure accuracy, we cannot guarantee the completeness of the details. If you are the rightful owner of any referenced materials and wish them removed, please email takedown@cockpitking.com.”
