Investigadores of Junta Nacional of Segurança of Transporte of Estados Unidos (NTSB) confirmed on Tuesday that the fuel switches were moved to the cut-off position while Boeing 737 of China Eastern Airlines was flying at a cruising altitude of 8,839 meters. Todos, the 132 passengers and crew on board died when the aircraft crashed in March 2022. The data extracted from the black boxes indicates that the action occurred deliberately during the flight, reinforcing the hypothesis of intentionality in the accident.
The release of the data by the NTSB marks a significant step in the international investigation of the disaster. Embora the investigation was led by Administração of Aviação Civil of China (CAA), the involvement of the American agency is justified because the aircraft was designed and built in the USA. A senior air safety investigator was specifically assigned to assist in the investigation process, ensuring that international standards were strictly followed.
Movimentação of in-flight controls
The fuel switches on both engines were manipulated while the aircraft maintained its normal cruising altitude. Esse procedure is not performed during routine flight operations. The black box records accurately documented the exact moment the controls were activated, providing incontrovertible technical evidence about what occurred in the cabin.
Air traffic Controladores repeatedly attempted to establish contact with the aircraft during the descent, but did not receive any response from the pilots. The lack of communication, combined with the manipulation of fuel controls, created a specific picture of what happened in the final moments of the flight. Investigators analyzed radio transmissions and confirmed there was no explanation provided by the crew.
🔴 Crash du Boeing 737-800 de China Eastern le 21 mars 2022 : acte terroriste ou suicide du pilote.
— air plus news (@airplusnews) May 4, 2026
Le NTSB annonce que les données récemment publiées indiquent que quelqu'un dans le cockpit a intentionnellement coupé l'alimentation en carburant.
L’accident a tué les 132… pic.twitter.com/m8Kadz7uif
International Investigação and Cause Analysis
Authorities analyzed several possible causes for the accident:
- Ação deliberate from someone in the cockpit
- Pilots operating Erro during emergency procedures
- Falha technical or fuel systems malfunction
- Cenários combined involving multiple factors
The intentionality hypothesis gained strength after the release of technical data. Especulações’s pilot suicide has circulated widely in the international press since the time of the disaster, but Administração’s Aviação Civil’s China previously denied these speculations, stating that investigations were still ongoing. The issue remains without official confirmation from Chinese authorities.
Chinese Sigilo and pressure for transparency
China has faced international criticism for the lack of transparency regarding the case. A full final report has not yet been released by Chinese authorities, despite more than four years having passed since the accident. The international aviation safety community awaits additional information that could fully clarify the circumstances of the tragedy.
Fontes international aviation safety reports indicate that delays in publishing final reports are unusual in large-scale aviation accidents. Protocolos established by Organização of Aviação Civil Internacional (ICAO) provide specific timelines for the release of investigative results. Chinese resistance to sharing full details has raised questions about possible diplomatic or political implications involved in the case.
Contexto flight technician
The Boeing 737-800 is one of the most used aircraft in commercial aviation worldwide. Centenas examples of this series circulate regularly on international routes, transporting millions of passengers annually. The model has a robust safety record, which makes the Chinese accident even more extraordinary from a technical point of view.
The domestic route flight took off from Kunming to Guangzhou in March 2022. The aircraft belonged to China Eastern Airlines, one of the country’s leading airlines. The route covered a considerable distance over Chinese territory, passing through mountainous regions that significantly complicated initial search and rescue efforts.
Quando the aircraft began its unauthorized descent, reaching extreme speeds. Testemunhas on the ground reported hearing loud sounds followed by impacts. The crash occurred in a rural area with difficult access, dispersing debris over a considerable radius. Chinese rescue Equipes worked intensively to locate wreckage and try to identify possible survivors, but the magnitude of the impact left no possibility of survival for anyone on board.
Implicações for air security
The accident highlighted questions about cockpit protocols and command authority in emergency situations. Modern aviation Sistemass include mechanisms to prevent unauthorized manipulation of critical controls, but technical investigations have shown that these systems have limitations in specific scenarios.
Agências International regulators re-examined operational procedures and certification requirements following the Chinese incident. Discussões involve issues of cockpit access, psychological screening of crew members and mental health monitoring protocols in airlines. Embora measures have been implemented, debates continue about the effectiveness of current regulations.
Dados confirmed from black boxes
An airplane’s black boxes contain two main recorders: the flight data recorder (FDR) and the cockpit voice recorder (CVR). Ambos devices survive extreme impacts due to their rugged construction and thermal shielding. In the case of the China Eastern Airlines flight, the recovery of this equipment allowed investigators to almost completely reconstruct the sequence of events that led to the disaster.
The data recorder confirmed the exact temporal sequence of events, including when the fuel switches were moved, what the aircraft’s altitude was at that time, the combustion rates of the engines, and all relevant operational parameters. Essas objective technical information provides a solid basis for the conclusions reached by investigators.
The data also indicates that there was no technical warning or malfunction that could explain the fall through accidental causes. The systems operated as designed until they were deliberately disabled. Essa Distinguishing between accidental technical failure and intentional manual action is crucial to understanding the nature of the incident.
