In the whole process of emergency alternate landing of Sichuan Airlines flight 3u8633, in addition to the joint efforts of the crew members, all departments also actively cooperated. At that time, after receiving the crew report and monitoring the distress code, southwest air traffic administration of civil aviation quickly launched the emergency response plan to cooperate with the aircraft for safe alternate landing.
Luo Tianyu, controller of the regional control center of civil aviation Southwest Air Traffic Control Bureau: the first time he (the crew) reported to me was 7:08. He said that there was something wrong with the plane and applied for a lower altitude. We also instructed him to go down 8400 meters. He repeated it, and then continued to report that the windshield was cracked and applied for return.
We also confirmed with him whether to return to Chongqing or alternate to Chengdu. The crew also reported that it would alternate to Chengdu. Finally, when the 8400 meters were sent to him again, the crew did not repeat it, only heard a noise.
Subsequently, the controller monitored by radar that the crew did not fly in the specified U-turn direction and altitude. At 7:10, the aircraft distress code appeared on the radar screen, and all controllers on duty of the air traffic control bureau entered an emergency working state. They could not communicate with the crew in a two-way and effective manner, which was the biggest difficulty they faced.
Luo Tianyu, controller of the regional control center of civil aviation Southwest Air Traffic Control Bureau: the situation at that time was basically that I kept sending instructions to him. He had not responded for a long time, so you can only guess its intention through some (crew) operations observed on the radar. If you can't master its dynamics, you don't know whether it will turn left or right next, and whether it will go up or down in the next step. You don't know at all. You can only create a clearance for it in its geographical location, regardless of any height. There can't be any aircraft around it, so as to ensure its safety.
The controller can only make preparations for alternate landing while continuing to send blind instructions to the crew.
Recording in tower control room of CAAC Southwest Air Traffic Control Bureau:
Sichuan 8633, the current runway situation is like this & hellip& hellip;
Sichuan 8633, continue to descend to 1800 meters, hold, receive the transponder, please identify it.
Through the radar, the controller found that Sichuan Airlines 3u8633 is reducing the flight altitude and is about to enter the busiest and most complex range of air traffic. They made a prediction of the situation at that time and immediately started the emergency plan. At 7:17, before Sichuan Airlines 3u8633 entered the medium and low airspace, the controller had completed the deployment and avoidance in the airspace within five minutes.
Song Yuan, the head teacher of the terminal control room of civil aviation Southwest Air Traffic Control Bureau: there were about 8 aircraft here at that time, of which 4 had an impact on it. Then (we) changed the four aircraft out at the fastest speed and let out the airspace height, opening up a green channel for the faulty crew. As our air traffic control, time is our most precious resource, so when we do this, we really race against time and dare not delay for a moment. We have completed it before it enters our airspace.
Unable to contact the crew, the tower cleared all runways within ten minutes after receiving the distress code, that is, around 7:20, and informed Chengdu Shuangliu Airport to make medical, fire and other rescue preparations.
Xu Zhiwen, the head teacher of the tower control office of civil aviation Southwest Air Traffic Control Bureau: we must clear all runways. We must do a good job in fire fighting and rescue on both runways and be ready for its landing. There are about 8 (aircraft) waiting on the ground taxiway and about 15 not leaving. All the aircraft are waiting on the ground to avoid it and provide it with the necessary space for ground activities.
At 7:24, the controller received distress information from the crew one after another, but was still unable to establish normal two-way contact with the crew. In order not to interfere with the crew and reduce the operation burden of crew replacement frequency, the tower controller and terminal controller use the same frequency to continue to blindly issue landing conditions and permits, and confirm that the aircraft is on the correct landing channel. At this time, the airport runway guidance vehicle, medical treatment, fire fighting and other rescue preparations are all in place.
Recording from tower control room of civil aviation Southwest Air Traffic Control Bureau: Sichuan 8633, landing ready, 02 right runway, ground wind 250, 2m / s.
Xu Zhiwen, the head teacher of the tower control room of civil aviation Southwest Air Traffic Control Bureau: from 7:35, everything is very normal, which is not very different from the normal flight. Except for the final landing stage, its speed is about 40 kilometers (per hour) higher than the normal flight. At this time, we should pay close attention to its disengagement and prepare for fire fighting and rescue. We didn't really rest assured until it landed and reported that there were only minor injuries and not serious injuries on board.
Liu Chuanjian, captain of Sichuan Airlines 3u8633: I want to tell them that they have done very well. Even if I couldn't contact them at that time, I knew they were doing this work, because when I sent the 7700 (code), all their work had begun. In fact, they were busier than us. Because they saw this, they had their work procedures, so they were doing all the coordination work and all the work, It was they who gave us the spacious road, so I am very (grateful) in my wechat, all my friends told them to thank all the staff who cooperated with us this time for me. Thank you very much.
And our ground support personnel. After our plane landed, the ground airport emergency support personnel and the company's emergency support personnel arrived at the fastest speed at the first time, and then let our passengers be safe. I think they are very great.