Lion Air crash: Boeing tells pilots how to deal with faulty sensors
November 07, 2018 21:02
Boeing has sent instructions to airlines using its 737 Max jet about how pilots should react to erroneous readings from sensors, an issue investigators believe was a key factor in the Lion Air crash in Indonesia, in which all 189 people on board were killed.
Aviation experts said the initial findings indicate that the aircrafts flight crew did not know at what speed they were flying, which is similar to the problem experienced by Air France flight 447, which plunged into the Atlantic sea in 2009.
Boeing said it had issued an operations manual bulletin, advising pilots how to deal with erroneous input from an angle of attack sensor.
The AOA sensor sends out information about the angle at which the aircraft is flying, which indicates to the captain and first officer whether the plane is at risk of stalling.
An AOA giving out erroneous data can lead to incorrect speed readings, potentially causing confusion among the flight crew.
Aviation safety expert David Gleave said this might lead to the captain and first officer seeing different speed readings.
Lion Jets Boeing 737 Max8 crashed into the Java Sea just 13 minutes after take-off, indicating pilots would have limited time to identify the issue and react correctly.
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