Soldiers of Guangxi Armed Police Force search for the black box of China Eastern Airlines Flight MU5735 in Wuzhou county, South China’s Guangxi Zhuang Autonomous Region, March 22, 2019.Xinhua (Xinhua/Jiang Huaipeng) China Eastern Airlines Flight MU5735 went missing and crashed in wuzhou city, South China’s Guangxi Zhuang Autonomous Region, March 21, 2017.The plane was carrying 123 passengers and nine crew members.At present, the scene rescue work is still in tense.When will one and two black boxes be found?One of the plane’s two flight recorders (black boxes) was found in the surface soil about 20 meters southeast of the main impact site at 16:30 on The 23rd, and was initially identified as the cockpit voice recorder.At the scene of the accident, all parties are organizing technical forces to search for another black box and promote the investigation and analysis progress.The first black box was found in this way: at around 18:00 on March 22, officers and soldiers of the Guangxi Armed Police Corps found orange-red fragments of suspected black box parts at the scene of the accident. They immediately identified the location and obtained on-site video evidence, and reported to the headquarters for further confirmation by the expert group.At 16:10 on the 23rd, experts from The Civil Aviation Administration of China entered the core area again.Through video analysis and on-site evidence collection, experts decided to clear debris around the demarcated area and collect personnel to focus on the search.At 16:15 a.m., searchers found what appeared to be an orange-red black box near the surface of the area. After verification by multiple parties, it was identified as one of the two black boxes of China Eastern Airlines Flight MU5735.Soldiers of the Guangxi Armed Police Force retrieve one of the two black boxes from the crash site of China Eastern Airlines Flight MU5735 in Wuzhou county, South China’s Guangxi Zhuang Autonomous Region, March 23, 2019.Xinhua News Agency (Photo by Xu Dong) 2. How is the search and rescue work going?Reporters at the site of the China Eastern airlines plane crash Sunday morning learned that the staff brought search dogs to the scene, as far as possible to expand the search area, to search for life, there are also medical personnel on the scene around the clock to ensure the safety of people at the scene.”At this time, we are continuing to do our utmost to find survivors. The search area has been expanded nearly fivefold and the site has been thoroughly searched.”Huang Shangwu, deputy director of operation and training department of Guangxi Fire and Rescue Corps, who participated in the on-site search, said hundreds of personnel at the scene used a combination of manual and aerial drones to conduct the search.Three, rain weather to search for what impact?From The night of The 23rd to the morning of the 24th, it continued to rain at the crash site, causing small landslides in some areas of the site, which have now been cleared.Such weather will adversely affect the rescue efforts.The rescue work should pay attention to the prevention of continuous rainfall and the adverse effects of high soil water content and loose soil layer, which are easy to cause landslides.The reporter saw at the scene, continuous rain leads to soft and sticky pavement soil, some places there is water, personnel walking inconvenience, the rescue workers sent bamboo frame board shop on the ground, to increase the friction between the vamp and the ground, prevent slipping, easy to carry out the rescue work smoothly.Excavators and other equipment have been prepared in the core area of the accident site.The scene of the crash.(Xinhua/Wu Sisi) 4. What have you found in the search?On the evening of 23, “March 21” eastern MU5735 aircraft accident third state emergency headquarters press conference, fire rescue group of zheng west of guangxi, as of the day on the 19th, fire rescue workers search for an area of 46000 square meters, found that there are parts of the wreckage and bodies, working group has been handed over to the survey.Photo taken on March 21 shows the wreckage of a plane found at the crash site in Tengxian County, Guangxi Zhuang Autonomous Region.Xinhua News Agency (photo provided by Guangxi Armed Police Corps) Walking into the core area of the accident, the reporter saw that there was a large area of scorched ash in the forest, and the valley was hit into a deep pit, and the smell of kerosene leakage came to his face.Plane debris, fragments and pieces of clothing scattered throughout the mountains.5. How about the maintenance and airworthiness before the crash?Sun Shiying, chairman and party secretary of Cea Yunnan Co., LTD, said the aircraft was introduced on June 22, 2015, and the maintenance of the aircraft has been carried out in strict accordance with the maintenance technical plan, and the technical situation is stable and normal.Before take-off, the aircraft shall meet the maintenance release standards and airworthiness requirements and be released normally.6. What are the qualifications and flight records of the pilots?According to Sun Shiying, the flight crew, the flight crew 3 people, 1 captain, 2 co-pilots.The captain was hired as B737 captain in January 2018 and has a total flight experience of 6,709 hours.The first officer’s total flight experience was 31,769 hours.The second officer’s total flight time was 556 hours.The three pilots’ flight licenses and health certificates are within the validity period. They are in good health, have complete flight experience and meet the requirements.”From what we know so far, the pilots are doing well and their families are stable.”Sun shi-ying said.What was the weather like when the plane crashed?MAO Yanfeng, director of the Civil Aviation Accident Investigation Center, said at a press conference that the weather on the route at the time of the crash was seaworthy and there was no danger.Soldiers of Guangxi Armed Police Force use police dogs to assist in the search at the site of the crash of China Eastern Airlines Flight MU5735 in Wuzhou County, South China’s Guangxi Zhuang Autonomous Region, March 22, 2019.Xinhua News Agency (By Jiang Huaipeng) 8. How was the communication between the pilot and the ground before the crash?According to MAO yanfeng, according to the air-to-ground call records between the aircrew and the air traffic control unit, the plane had maintained normal communication with the air traffic control unit since it took off from Kunming until it suddenly dropped altitude on the air route.Ix. How is the work of family security?At present, the working group has completed the connection with the families of passengers, and formulated the security plan for each family of passengers. A 300-person assistance team has been set up to ensure that each family of passengers has more than 3 staff to provide support and security.In the follow-up work, the working group will listen to the appeals of the families in detail, and continue to optimize the assistance work in accordance with the requirements of “one book per family, one special team”.X. How to check the potential safety hazards after the crash?The Office of The State Council Safety Commission and the Ministry of Emergency Management jointly issued a notice, urging all regions and relevant departments and units to take the March 21 China Eastern Airlines plane crash as a warning, comprehensively investigate and rectify potential safety hazards in all industries and sectors, and resolutely curb the occurrence of major accidents.According to the circular, the investigation of potential safety hazards in civil aviation should be carried out immediately, and problems in safety thinking, professional team building, implementation of rules and standards, safety management chain, security capability and safety responsibility should be rectified in a timely manner.