Latest on China Eastern Flight MU5735 Crash Investigation

Notification on the Progress of Investigation of the “3.21” China Eastern Airlines Flight MU5735 Aircraft Accident

On March 21, 2022, a Boeing 737-800 aircraft (registration number B-1791) of China Eastern Airlines Yunnan Co., Ltd. was operating the scheduled passenger flight MU5735 from Kunming Changshui Airport to Guangzhou Baiyun Airport. The plane took off from Kunming Changshui Airport at 13:16 and, 64 minutes later, deviated from its cruising altitude of 8900 meters, rapidly descended, and crashed near Mo’bancun, Lannan Town, Tengxian, Wuzhou City, Guangxi Zhuang Autonomous Region. All 123 passengers and 9 crew members aboard perished.

In accordance with the Civil Aviation Regulations of China, “Civil Aviation Aircraft Incident Technical Investigation Regulations” (CCAR-395), and Annex 13 “Aircraft Accident and Incident Investigation” to the International Civil Aviation Convention, the Civil Aviation Administration of China, together with relevant departments, conducted technical investigation into the accident. The main progress is as follows:

1. Debris Search, Identification, and Analysis: Organized search for debris evidence, identified and photographed major debris, marked their discovery locations, and created a wreckage distribution map; conducted specialized technical investigation on aircraft structure, flight control systems, engines, etc., to analyze the aircraft’s pre-crash attitude and the possible working status of key control components; sent important debris such as engine parts and control system components to laboratories for analysis to determine the cause of damage.

2. Flight Operations and Aircraft Airworthiness: Investigated the technical status, health condition, and performance of the crew members; examined the release plan, load balance, performance calculation, operational monitoring, crew readiness, safety management, training management, personnel qualification management, maintenance management, airworthiness directives compliance, service notices execution, routes, and scheduled maintenance of the incident flight; investigated fueling and fuel quality of the incident flight; analyzed monitoring data, video recordings, etc., to analyze the aircraft’s final stage of flight; repaired damaged recorders and analyzed the obtained data.

3. Flight Support: Investigated the qualifications of the personnel, facilities, and equipment at the departure airport; inspected the runway, taxiway, taxi route, and apron surface used by the incident flight for daily inspections and maintenance; examined the qualifications of air traffic control personnel, communication navigation surveillance equipment, ATC automation system, ATC command process, and route weather conditions; investigated basic information of passengers, baggage, cargo, mail, security screening, and loading conditions; verified the carriage information of dangerous goods on the incident flight and the training of crew and related support personnel on dangerous goods.

The investigation confirmed that the flight crew and cabin crew of the incident flight held valid licenses and certificates, their flight, duty, and rest hours complied with regulations, they passed the health check on the day of the flight, and the crew qualifications and configuration met requirements; the airworthiness documents of the incident aircraft were valid, and the qualifications of relevant maintenance personnel met requirements; no faults or abnormalities were found in aircraft systems, fuselage structure, engines, etc., before takeoff, and there were no deferred faults; the qualifications of the operational support personnel at the departure airport on the day met requirements, the facilities and equipment worked properly, and operations and procedures were in compliance; the qualifications of relevant air traffic control personnel met requirements, communication navigation surveillance equipment worked properly, and there were no abnormal radio communications and control commands before the incident, with no reports of dangerous weather in the airspace and flight levels where the aircraft was operating; the loading of the incident flight complied with requirements, no dangerous goods were declared in cargo or mail, and there was no evidence of dangerous goods in cargo or baggage.

Subsequently, the technical investigation team will continue with experimental verification and causal analysis, and relevant information will be released in a timely manner based on the progress of the investigation.

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Source: Xinhua News Agency app

Editor: Shao Ziyi Proofreader: Sun Jiehua Image Editor: Zhou Yang

Reviewed by: Zhu Jianhua Produced by: Pu Hongyi Approved by: Lin Yanxing

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