China News Network, September 9 (Zhongxin Financial Reporter Ge Cheng) On September 10, Air China's CA9 appeared in the cabin smoke before landing, and terms such as "Air China CA10 suspected left engine fire" and "All personnel of CA403 were safely evacuated" appeared on Weibo hot search.

Video on social media showed a fire on the side of an Air China flight parked at the airport, an emergency slide on board had been deployed, smoke was thick in the cabin of the plane, many passengers had left the cabin from the slide, and fire trucks were dispatched at the scene.

Video screenshots.

The crew has been safely evacuated

According to Air China's official Weibo account, flight CA9 from Chengdu Tianfu Airport to Singapore Changi Airport on September 10 was A403neo with aircraft number B-320J. There were 305 passengers and 146 crew members on board.

For the specific situation at the scene, Air China said that the aircraft appeared cabin smoke before landing, the crew disposed of it according to the procedure, the plane landed at Singapore Changi Airport at 16:14 Beijing time, and the crew organized passengers to carry out emergency evacuation after landing, and Singapore Changi Airport initiated emergency procedures. Human-machine safety. The cause of the incident is under investigation.

Singapore's Changi Airport said that on the afternoon of September 2023, 9, Air China flight CA10 from Chengdu to Singapore smoked in the front cargo warehouse and toilet during the flight. The flight landed at Changi Airport at around 403:16 hours and all passengers and crew were safely evacuated and the fire in the left engine was extinguished.

Airport sources show that after landing, the plane's emergency slide was opened for rapid evacuation. The Airport Emergency Service responded immediately to the incident and extinguished the fire in the plane's left engine at about 16:25. Nine passengers who suffered minor injuries from smoke inhalation or abrasions during the evacuation have been treated.

According to media reports, after the evacuation of the organic passengers, they said: In the second half of the trip, the whole cabin was filled with a stimulating stench, but the source of the smell was not known, and the crew asked everyone to cover their mouths and noses. Another wrote: "The engine caught fire as the plane descended, and the cabin smoked for 40 minutes. It was difficult to breathe, and everyone leaned over and covered their mouths and noses with wet towels to barely breathe..."

According to the monitoring of the data of the flight standing standard, flight CA403 issued a 16 code alarm at 05:7700.

The flight was issued with a 7700 code

Previously, according to the monitoring of flight standing data, flight CA403 issued the 16 code at 05:7700.

Civil aviation expert Li Hanming told Chinanews.com that the 7700 represented flight had an emergency. According to the International Civil Aviation Organization (ICAO), each aircraft needs to set a unique code called the answering machine call sign. This unique code consists of four digits and can be repeated in different regions.

He said that among the ten thousand codes, ICAO retained three codes: in case of hijacking, hang 7500; If the aircraft communication fails and cannot contact the ground, hang the 7600; Other emergencies, hang 7700.

Therefore, hanging 7700 is equivalent to stating "I have a problem, but it is not a hijacking, and land-air communication is normal." Air traffic controllers on the ground keep an eye on these flights and discuss appropriate solutions through air-ground communications and crew members such as pilots (e.g. advance notification of ground units such as fire engines).

Li Hanming said that judging from the time when CA403 flight hung out the 7700 code, it should be the fire that appeared in the final approach stage. In response to the above fire situation, the crew will train the handling process (engine fire checklist) in the simulated aircraft in daily training, which can be divided into three steps of S-I-E (shutdown, isolation, and flameout).

After these three steps, in the three elements of fuel, oxidizer and temperature required in the combustion theory, the fuel is controlled by cutting off the oil circuit, and the temperature is controlled by releasing the fire extinguishing agent, and the engine fire situation will be controlled with a high probability. "However, the completion of the above steps also means that the engine will no longer work properly during this flight."

In addition, the crew is required to perform another standard process known as a "single-engine landing checklist" to land the aircraft safely with only one working engine. This is also a standard process that will be frequently trained and evaluated in daily training.

"The professionalism is superb"

Although passengers and crew have been evacuated safely, some netizens on social media expressed their palpitations. "Although the probability of an accident is very low, I am really afraid of flying." Another netizen said, "Fortunately, there is no danger in this matter, and everything is safe." ”

In this regard, Li Hanming said that judging from the relevant information of the aircraft flight, "This time, the crew quickly implemented two related standard processes in 12 minutes, and the airport fire truck also completed the dispatch within 12 minutes, and its professional level is first-class." ”

However, he also said, "Generally, after the engine fire is extinguished, the damage to the engine is inspected." As for the extent of the damage, it is difficult to determine now. ”

In addition, the above events have also had a certain impact on the relevant airports. Singapore's Changi Airport said that due to the incident, the third runway of Changi Airport was temporarily closed. The aircraft involved was moved elsewhere at about 18 o'clock. The third runway was reopened at about 19:2 after inspection. During the runway closure, one flight was diverted to Batam, Indonesia. (End)