Indonesia urges more training for pilots after Lion Air crash

Lloyd Doyle
November 14, 2018

The pilots say they were not trained in new features of an anti-stall system in the plane that differ from previous models of the 737.

The complaints from pilot union leaders at Southwest Airlines Co. and American are significant because of the size of those carriers' 737 fleets and their Max purchases.

Last week it said the fix for this type of event - known as a "runaway stabiliser" - was covered by existing procedures.

The automated system is created to help pilots avoid raising the plane's nose too high, which can cause the aircraft to stall.

Boeing reportedly warned airlines about the newly introduced feature and risks it hypothetically carries in a safety bulletin issued days after the tragedy, which points to the fact that pilots couldn't have been aware of the new computer mechanism and risks connected with flight control at the moment of the crash, shortly before and even immediately after it.

But Soerjanto's deputy, Haryo Satmiko, said in an interview last Wednesday that Boeing's manual was "incomplete" when it came to advising pilots on how to handle a situation in which false data is fed into the automatic anti-stall system to correct for an ascent that was not happening.

A spokeswoman said: 'We are taking every measure to fully understand all aspects of this incident, working closely with the investigating team and all regulatory authorities involved. "We are confident in the safety of the 737 MAX". The FAA ordered airlines to add an explanation into flight manuals. There was a 20-degree differential between the readings on the left and right sides of the plane, Indonesian investigators said.


"The FAA will take further action if findings from the accident investigation warrant", the agency said in a statement Tuesday.

Pilots could stop this automated response by pressing two buttons if the system behaved unexpectedly, but questions have been raised about how well prepared they were for such an automatic reaction and how much time they had to respond.

In addition, he said, the onboard checklist that pilots had been carrying gave what now appears to be incorrect instructions for pulling out of the emergency condition that apparently confronted the Lion Air pilots. It essentially tricked the system into ordering a sharp dive. The sensor helps to determine whether the plane is about to stall and dive.

The MAX is the newest version of the twin-engine Boeing 737.

Because the system is only created to operate in rare conditions while pilots are manually flying, "pilots should never see" the system in operation, according to the Southwest memo. "That is positive news, but it is no assurance that the system will not fail".

Southwest spokeswoman Brandy King said the new automated maneuvering system was not included in the operating manual for MAX models.

That reasoning doesn't make sense, said Roger Cox, a retired investigator with the U.S. National Transportation Safety Board and a former airline pilot. The Lion Air aircraft lost in the accident was virtually brand new, delivered by Boeing in August; this was the first accident involving an aircraft touted for its safety. "This is important systems information that pilots should know about".

Other reports by Iphone Fresh

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