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There are still many puzzles in Indian water accidents. Photo/x/@environmentPlanb
6 The secret of the results of the initial study of Indian water accidents, from the recording of pilots and copopolites in the cab to the fuel switch
1. Who turned off the switch?
Just a few seconds after take -off, two fuel control switches Boeing 787 Dreamliner were suddenly moved to the “cut -off” position, which forced the engine to lack the fuel and caused a complete loss of power. Appeal to the “cut off” position is usually performed only after landing.
The cockpit recorded the pilot’s voice, asked another pilot why he “cut off”, to which the pilot answered that he did not. The record did not explain who said what. When taking off, Pipylot flies on an airplane while the captain controls.
The switches return to normal positions during flight, starting automatic ignition of the engine. During the accident, one machine restored the pushing power, while the other engine turned on again, but did not recover.
Air India 171 flight was aired less than one minute before he fell in a dense settlement in the city of Ahmedabad, Western India, became one of the most confusing disasters in India.
Having launched the BBC, investigators are investigating the ruins of aircraft and cabin to understand that it is not so immediately after takeoff. Indian air flight reaches a height of 625 feet in sunny weather, before the loss of location for about 50 seconds, according to the Flightradar24 website.
2. The fuel switch is made specifically to prevent random actions
The initial investigation report – under the leadership of the Indian authorities with experts from Boeing, General Electric, Indian Air, Indian regulators and participants from the USA and Great Britain – raised several questions.
Investigators said that the fuel switch containing the lever was designed to prevent random activation – the switch must be raised to unlock before the appeal, the security function that has existed since the 1950s. Made of hard standards, this switch is very reliable. The protective bracket additionally protects the transition from unintentional clashes.
“It is almost impossible to attract two switches only with the help of one hand, and this makes unintentional liberation unlikely,” said the aviation investigator based in Canada, who wanted to remain anonymous for the BBC.
This is what is allocating Indian water.
Also read: The Indian water pilot deliberately dropped the plane?
3. One of the pilots is responsible
If one of the pilots is responsible for the death of switching, whether it is deliberate or not, it “raises the question: why,” said Sean Proonikka, a former accident investigator and a flight expert at the University of Ohio.
Is it intentional or out of confusion? This seems impossible because the pilot does not report unusual things.
Familiar display of the Dreamliner 787 aircraft control panel with marked components. The pushing lever is clearly visible in the middle. The engine control switch, which breaks the fuel supply and turns off the engine, is on the left. A switch with a footage mechanism, which should be raised before turning, on the right. Safe brackets prevent unintentional switching movements.