Boeing’s new long-haul aircraft was subjected to an aborted takeoff in a worst-case scenario, with worn brakes, maximum weight and temperatures above 1,370°C
Boeing announced that the 777-9 has successfully completed one of the most demanding stages of its certification program: the maximum brake energy test. This is a mandatory procedure to prove that the aircraft can stop safely even in a critical situation during take-off.
In the test, the aircraft was loaded to the maximum take-off weight of around 350 tonnes and accelerated to around 190 knots before an aborted take-off was simulated. The aim is to recreate one of the most serious scenarios an aircraft can face, such as a sudden engine failure just before take-off.
According to Boeing, the test was conducted under conditions that were deliberately pushed to the limit. The brakes used were in their most worn condition, precisely to represent the worst possible scenario. During braking, the temperature rose to over 1,370 degrees Celsius, which led to extreme heating of the wheels.
As a result, the wheel protection fuses were activated to release the pressure from the tires. This mechanism exists to prevent the tires from exploding due to overheating, which could damage the aircraft or pose an additional risk in the event of a passenger evacuation.
This type of evaluation is part of the certification process that Boeing carries out together FAAUnited States Civil Aviation Authority. The aim is to demonstrate that the aircraft, even in the event of an aborted take-off under the most extreme conditions, can still safely stay within the bounds of the runway.
According to the program team, the test was completed without any deviations, marking another important step forward in the development and certification of the 777-9.
Photos and videos: Boeing. This content was created with the help of AI and reviewed by the editors.
