However,
Crash air india boeing 787::
After the analysis of the black boxes. Furthermore, the disaster scenario of the AI-171 flight of Air India on June 12 in Ahmedabad is becoming clearer and asks even more questions. Moreover, In their preliminary report, Indian investigators indicate that the food of the two engines was cut just after takeoff. Therefore, Details. Therefore,
One month after the Boeing 787 Air India crash which killed 260 victims. In addition, the Indian Air Accidents (AAIB) published its preliminary report on Friday 11 on Friday 11. For example, After the analysis of the two black boxes. Moreover, a scenario takes shape to explain the loss of altitude just after taking off from Ahmedabad airport.
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According to data from the flight parameter recorder (Flight Data Recorder). Similarly, the sound recorder that records conversations in the cockpit (cockpit Voice Recorder), the fuel supply of the two General Electric engines was purely and simply cut. Meanwhile, It is the result of a manual action. However, carried out by one of the two pilots, without it being specified which one.
Two switches at the investigations center – Crash air india boeing 787:
The report precisely targets two specific switches in the cockpit. Located between the two pilots, these buttons manage the fuel supply of the two engines. The one on the crash air india boeing 787: left logically concerns the left engine, the one on the right the right engine. When they are in high position, on “run”, the reactors are powered by kerosene. Conversely. in the low position, on “cut off”, the fuel no longer arrives at the engines and they cut themselves almost instantly.
Confusion in the cockpit
According to the report, after reaching the speed of 330 km/h, the plane took off. Troubling. three seconds later, the fuel power switches from the two engines went from the “run” position to the “Cut off” position, one after the other, with an interval of 0.1 seconds. The two engines then began to lose power. In the recording of the conversations of the cockpit. one hears one of the pilots ask the other why he cut the food and the other pilot reply that he did not do it.
Read also: Crash of crash air india boeing 787: a Boeing in India: air turbine, engine failure … why this emergency wind turbine is at the center of the investigations
The small emergency wind turbine (RAM. Air Turbine) which serves as a substitution electrical supply system in the event of a failure of the engines was then deployed. Ten seconds later, the fuel supply of the left engine was restarted, then that of the right engine. The engines then gradually restarted themselves but too late. It was at this time that the crew launched its distress call. The rest, we know her. After reaching a height of 130 meters, the Boeing 787 lost altitude and crashed on a medical school. The accident made 241 victims of the 242 occupants of the aircraft and killed 19 people on the ground.
These switches are used on the floor for starting. stopping engines, or in flight for manual stop or restart in the event of an engine failure. In order to limit the risk of poor manipulation of these buttons by pilots, security exists. To change their position, you must first pull them towards yourself. An involuntary act of one of the pilots therefore seems unlikely.
The track of human error …
Crash air india boeing 787:
In view of these new elements. a question is now arising: why did the crew of the AI-171 flight India voluntarily cut the supply of the two engines by putting the switches in the low position. The preliminary report does not mention, crash air india boeing 787: in fact, any problem of propulsion during takeoff. The final investigation report will, perhaps, answer this question which remains enigmatic for the time being.
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