A comprehensive final report released by the Civil Aviation Administration of China (CAAC) has concluded that the catastrophic crash of Flight MU5735 was caused by a total fuel cut-off to the engines while at cruising altitude. The investigative findings, made public on May 5, 2026, reveal that a mechanical failure within the fuel management system—specifically a malfunction in the high-pressure fuel shut-off valves—led to an irreversible “starvation” of both power plants. This technical glitch prevented the engines from receiving the combustible material necessary to maintain thrust, causing the aircraft to enter a near-vertical dive from 29,000 feet. The report confirms that the pilots followed all standard emergency restart procedures, but a “cascading hydraulic failure” triggered by the sudden loss of engine-driven power rendered the manual override systems unresponsive.
Crucially, the CAAC has officially ruled out intentional pilot action or external interference, putting to rest years of speculation regarding potential foul play. Forensic analysis of the black boxes showed that the flight crew fought to regain control of the plummeting jet until the moment of impact, but the lack of fuel flow made a recovery aerodynamically impossible. In response to the findings, the Chinese government has issued an immediate “ground and inspect” order for all aircraft utilizing the specific fuel valve model identified in the report. This directive affects nearly 450 active airframes across several domestic carriers, marking a significant disruption to China’s aviation sector. As the industry grapples with the technical fallout, the report provides a somber sense of closure for the families of the victims, shifting the focus from human error to a critical, industry-wide hardware vulnerability that requires urgent international attention.
The Civil Aviation Administration of China (CAAC) has released a full final report that says the terrible crash of Flight MU5735 was caused by the engines losing all of their fuel while the plane was flying at cruising altitude. The investigation’s results, which were made public on May 5, 2026, show that a mechanical failure in the fuel management system, specifically a problem with the high-pressure fuel shut-off valves, caused both power plants to “starve” in a way that could not be fixed. This technical problem stopped the engines from getting the fuel they needed to keep thrust, which made the plane dive almost straight down from 29,000 feet. The report says that the pilots did everything right when they had to restart the engine in an emergency. However, a “cascading hydraulic failure” caused the manual override systems to stop working when the engine-driven power suddenly stopped.
The CAAC has officially ruled out intentional pilot action or outside interference, putting to rest years of speculation about possible foul play. Forensic analysis of the black boxes showed that the flight crew fought to get control of the falling jet until it hit the ground, but the lack of fuel flow made it impossible to recover aerodynamically. The Chinese government has ordered all planes that use the specific fuel valve model mentioned in the report to “ground and inspect” right away. This directive has a big impact on China’s aviation sector because it affects almost 450 active airframes across several domestic carriers. As the industry deals with the technical fallout, the report gives the families of the victims a sense of closure. It shifts the focus from human error to a serious hardware vulnerability that affects the whole industry and needs immediate international attention.
