Cathay Pacific Flight 780
| Industry | Airline |
|---|---|
| Founded | September 24, 1946 |
| Headquarters | Hong Kong , Hong Kong |
| Products | Air transport services |
| Website | www |
Cathay Pacific Flight 780 was scheduled from Juanda International Airport in Surabaya, Indonesia, to Hong Kong International Airport on 13 April 2010. The Airbus A330-342 was carrying 309 passengers along with 13 crew members. While nearing Hong Kong, the flight crew experienced a loss of thrust control in Engine 1. The aircraft touched down at nearly double the typical landing speed, incurring minor structural damage. During the emergency evacuation via slides, 57 passengers sustained injuries—one critically—and six crew members were also harmed.
The root cause of the event was fuel contamination at Surabaya, which gradually impaired both engines. Australian pilots Captain Malcolm Waters and First Officer David Hayhoe managed to land the plane safely under severe circumstances. Their performance was likened to that of Chesley Sullenberger and Jeffrey Skiles during US Airways Flight 1549 in 2009. In recognition of their outstanding airmanship, they were honored with the Polaris Award by the International Federation of Air Line Pilots' Associations in March 2014.
Captain Waters was 35 years old with 12 years’ experience at Cathay Pacific; First Officer Hayhoe, aged 37, had been with Cathay Pacific for three years and previously served 11 years in the Royal Australian Air Force.
Aircraft
The aircraft involved was an Airbus A330-342 bearing registration B-HLL and serial number 244, powered by two Rolls-Royce Trent 772-60 engines. Its maiden flight occurred on 4 November 1998, and it was delivered to Cathay Pacific on 25 November that year. The cabin layout accommodated 311 passengers and 13 crew, including 44 business-class seats and 267 economy seats.
Following the incident, DVB Bank purchased the aircraft in July 2011 (with Arena Aviation Capital taking ownership from March 2017). It was transferred to Dragonair (later Cathay Dragon) on 23 April 2012 and underwent reconfiguration in 2013 to seat 307 passengers—42 business class and 265 economy. On 3 November 2017, it received the Cathay Dragon livery. The same aircraft was involved in another incident on 8 September 2016 when its left engine collided with a delivery van during Flight 691 from Hong Kong to Penang.
The plane was retired on 13 August 2020 after its lease ended, completing its final commercial flight (KA993) from Beijing to Hong Kong. Its last journey was on 14 October 2020 to Pinal Airpark, Arizona, via Anchorage (flight KA3496), before being dismantled in November 2021.
Accident
Cathay Pacific Flight 780 took off from Juanda International Airport, Indonesia, at 08:24 local time. Shortly after departure, minor fluctuations appeared in the engine pressure ratios of both engines, with more pronounced variation on engine No.2. After more than an hour at cruising altitude FL390, the ECAM system alerted an "ENG 2 CTL SYS FAULT." Maintenance control reviewed the data and judged it safe to continue flying as other engine parameters remained within limits.
Approximately two hours later, the same fault recurred; again continuation was authorized. During descent towards Hong Kong approximately 203 km southeast of the airport, ECAM warnings indicated "ENG 1 CTL SYS FAULT" and "ENG 2 STALL," signaling a compressor stall on engine No.2. The pilots reduced thrust on engine No.2 to idle and increased power on engine No.1 to maximum continuous thrust while issuing a pan-pan call to request priority for landing.
At about 8,000 feet altitude approaching Hong Kong, an "ENG 1 STALL" alert appeared. Following procedures for a compressor stall on engine No.1, the crew declared a mayday. Tests showed that engine No.1 spooled up to roughly 74% N1, while engine No.2 remained below idle at around 17% N1. This thrust level enabled them to maintain altitude at about 5,500 feet and continue approach; however, thrust levers could not reduce power from engine No.1 below this threshold.
At local time 13:43 (05:43 UTC), the aircraft landed forcefully on runway 07L at a groundspeed of approximately 426 km/h—176 km/h above normal touchdown speed for an A330 and exceeding limitations for flap extension and tire ratings. The airplane bounced then struck down again while banking leftward, causing contact between the left engine and runway surface. Only the thrust reverser on engine No.1 deployed; due to a malfunction, engine No.2’s reverser failed to activate. The crew applied manual braking to stop; engine No.1 remained operating between 70%–80% N1 until shutdown.
Five out of eight main landing gear tires were deflated upon landing; firefighters at the airport observed smoke and flames emanating from the landing gear area. An emergency evacuation was initiated resulting in injuries to fifty-seven passengers—ten required hospital treatment—and six crew members were also injured.
Investigations
A collaborative investigation team was established, comprising officials from the Hong Kong Civil Aviation Department, the French Bureau of Enquiry and Analysis for Civil Aviation Safety, and the British Air Accidents Investigation Branch. Additional involvement came from the Indonesian National Transportation Safety Committee, the American National Transportation Safety Board, as well as technical representatives from Airbus, Rolls-Royce, and Cathay Pacific.
Examination of data retrieved from the digital flight data recorder, cockpit voice recorder, and quick access recorder concentrated on engine performance, engine control mechanisms, and the fuel delivery system.
Findings indicated contamination of the engines’ fuel systems by spherical particles. The Accident Investigation Division of the Hong Kong Civil Aviation Department determined that these particles were responsible for the incident. The polluted fuel contained superabsorbent polymer (SAP) granules introduced during refueling operations in Surabaya, which caused both engines to lose thrust control while approaching Hong Kong.
The SAP particles originated from compromised filter monitors within a fuel dispenser at Juanda Airport, resulting in the fuel metering valves becoming immobilized. These valves were locked in positions consistent with the thrust levels recorded for each engine. Additional engine elements, such as the variable stator vane controller on engine No. 2, were similarly affected and seized. Contamination extended throughout the entire fuel system, including the storage tanks.
Testing of fuel samples from Juanda International Airport confirmed contamination presence. During airport expansion involving new parking bay construction, the fuel supply pipeline had been lengthened. Investigators identified procedural deficiencies during system recommissioning and detected salt water intrusion into the fuel line. These factors degraded filter monitor functionality within the pipeline, allowing SAP particles to enter and contaminate the fuel supply.
Dramatization
This accident was depicted in "Deadly Descent," the premiere episode of season 19 of the Canadian television series Mayday.
See also
- British Airways Flight 38, a Boeing 777 that suffered engine power loss prior to a 2008 emergency landing at London Heathrow Airport
- Air Transat Flight 236, an Airbus A330-200 that experienced fuel exhaustion but successfully landed at Lajes Air Base in the Azores
- British Airways Flight 009, a Boeing 747-200 that lost all four engines after encountering volcanic ash
- Qantas Flight 72, an Airbus A330-300 incident over the Indian Ocean involving contradictory information received by flight crew