On March 21, 2022, Boeing 737-800 B-1791 of China Eastern Airlines Yunnan Co., Ltd. was carrying out the MU5735 Kunming-Guangzhou flight and was cruising in the Guangzhou control area. From the cruising altitude of 8,900 meters on the air route, it dropped rapidly and finally crashed near Mozong Village, Tengxian Town, Teng County, Wuzhou City, Guangxi Zhuang Autonomous Region. The plane disintegrated after hitting the ground, killing all 123 passengers and 9 crew members on board.
According to the provisions of the Convention on International Civil Aviation, in the event of an accident Within 30 days from the date of the investigation, the investigating organization state shall send the preliminary investigation report to ICAO and participating states, which usually contains the factual information currently obtained, excluding the analysis and conclusion of the cause of the accident. At present, the “3.21” China Eastern Airlines MU5735 Aircraft Flight Accident Investigation Preliminary Report has been completed. The report mainly includes factual information such as flight history, crew and maintenance personnel, airworthiness maintenance, and wreckage distribution. The main situation is as follows:
The plane was at 13:16 Beijing time Taking off from Runway 21 of Kunming Changshui Airport, it rose to a cruising altitude of 8900 meters at 13:27, entered the Guangzhou control area along the A599 route at 14:17, and at 14:20:55 the Guangzhou area control radar displayed a “deviation from the command altitude” warning, and the aircraft left At cruising altitude, the controller called the crew, but received no response. At 14:21:40, the last recorded aircraft information by the radar was: standard pressure altitude of 3380 meters, ground speed of 1010 km/h, and heading of 117 degrees. Subsequently, the radar signal disappeared.
The accident scene is located in Teng County, Wuzhou City, Guangxi Zhuang Autonomous Region In a valley that runs from southeast to northwest near Mozong Village, Nanzhen. A puddle with an area of about 45 square meters and a depth of 2.7 meters can be seen at the scene, which was determined to be the main impact point, located at 23°19′25.52″ north latitude and 111°06′44.30″ east longitude. The debris of the aircraft wreckage was mainly found on the ground and underground in the azimuth range from 0° to 150° of the impact point. The trailing edge of the right wingtip winglet was found approximately 12 kilometers from the main impact point. There were traces of fire in the forest vegetation at the scene of the accident. Main wreckage including horizontal stabilizer, vertical tail, rudder, left and right engines, left and right wings, fuselage parts, landing gear and cockpit parts were found at the scene. After all the wreckage was collected from the scene, it was uniformly transported to a special warehouse for cleaning and identification, and placed according to the actual size and position of the aircraft, which was convenient for subsequent inspection and analysis.
After investigation, the flight crew, cabin crew and maintenance The qualifications of the release personnel meet the requirements; the airworthiness certificate of the aircraft in the accident is valid, the last A inspection (31A) and the last C inspection (3C) of the aircraft did not exceed the inspection time limit specified in the maintenance plan, and there was no fault report before the flight and short-term parking on the same day. No fault reservation; no cargo declared as dangerous goods on board; no abnormality was found in the navigation and surveillance facilities and equipment along the route involved in this flight, and no dangerous weather forecast; before the departure from the cruising altitude, the radio communication between the crew and the air traffic control department and the There was no abnormality in the control and command, and the last normal land-air call was at 14:16; the two recorders on the plane were severely damaged due to the impact, and the data repair and analysis work is still in progress.
Follow-up, the technical investigation team will continue to in-depth according to relevant procedures Carry out investigations such as wreck identification, classification and inspection, flight data analysis, and necessary experimental verification, and scientifically and rigorously identify the cause of the accident.
Source: Xinhua News Agency< /span>