Did faulty sensor cause Indonesia air crash?


One of the critical ways a plane determines if a stall is imminent is a measurement known as angle of attack, which is a calculation of the angle at which the wind is passing over the wings. The malfunction can cause the plane's computers to erroneously detect a mid-flight stall in airflow, causing the aircraft to abruptly dive to regain the speed it needs to keep flying. "And yes, we now have seven Max 9's in operation. there are no plans to alter our 737 Max operations".

At the same time it will alert the pilot about the minimum speed to warn that the plane may be near staling - this causes the pilot's control column to shake as a warning - but will be contradicted by the speed indicators on the flight deck. Boeing's bulletin said it was directing flight crews to existing guidelines. If they can't figure out what's going on with their aircraft instantly and without uncertainty, and if the aircraft itself can't do so, then we still have a very long way to go.

Industry insiders said that the completion of the Zhoushan plant, announced amid ongoing China-US trade frictions, reflects US companies' heavy dependence on both the supply chain in China as well as the country's huge market.

Boeing says in the bulletin that if this failure arises, "initially, higher control forces may be needed to overcome any nose-down stabilizer trim".

The planemaker said local aviation officials believed pilots may have been given wrong information by the plane's automated systems before the fatal crash. "I'm not aware of any other operator having this problem".

He added that a team had been deployed to examine the plane.

The advice from the Federal Aviation Authority would be binding on all USA carriers flying Boeing 737 Max 8 versions.

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The doomed jet was a Boeing 737-Max 8, one of the world's newest and most advanced commercial passenger planes, and there is still no answer as to what caused the crash. Flight JT610, which killed all 189 people on board, was the first major accident involving the 737 MAX.

There are also procedures for pilots to follow in the event of missing data from damaged sensors on the fuselage skin, but it remains unclear how much time the crew of Flight JT610 had to respond because they were only a few thousand feet in the air.

However, Bloomberg wrote that the pilots in the Lion Air crash reported an "erroneous airspeed indication" after taking off from Jakarta airport and before they slammed into the water at around 966km per hour, according to Indonesia's National Transportation Safety Committee.

A Lion Air passenger jet has been involved in another accident - just a week after a plane from the Indonesian airline crashed with the loss of all 189 people on board.

Soerjanto Tjahjono, head of Indonesia's National Transportation Safety Committee told reporters that after one flight from Bali to Jakarta - the last flight before the crash - the left and right AOA sensors were found to disagree by 20 degrees.

The US' Federal Aviation Administration is warning all airlines that operate the plane model to learn to deal with software glitches.