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 situations are as follows: On March 21, 2022, the Boeing 737-800 B-1791 of China Eastern Airline took off from Runway 21 of Kunming Changshui Airport at 13:16 Beijing time, 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 Guangzhou area control radar showed a “deviation” Command altitude” warning, the aircraft left the cruise altitude, the controller called the crew immediately, but received no reply.
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 a valley running from southeast to northwest near Mocong Village, Conan Town, Teng County, Wuzhou City, Guangxi Zhuang Autonomous Region. A puddle with an area of about 45 square meters and a depth of 2.7 meters can be seen at the scene, which is 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 wing let 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. Major 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 investigation, the qualifications of the flight crew, cabin crew and maintenance release personnel meet the requirements; the airworthiness certificate of the aircraft in the accident is valid; There is no fault report and no
fault reservation before the flight and short-term parking on the same day; there is no cargo declared as dangerous goods on the plane.
Data restoration of the CVR and FDR is still in progress. The plane disintegrated after hitting the ground, killing all 123 passengers and 9 crew members on board.