Pilots confronted Boeing about 737 Max before second crash.
American Airlines Pilot Union demanded to know why Boeing did not report the flight control system which is now under investigation.
737 Max contains four versions, all of which have MCAS system. 737 Max 8 was involved in two fatal accidents.
American Airlines pilots questioned a Boeing official on October 737 about a week after the first accident of the passenger jet of Lion Air.
In a tense recording received by CBS News from the Applied Pilot Association, which was first reported by the Dallas Morning News, pilots pressed Boeing to explain why a flight control system - under investigation as a cause of the accident - disclosed It was not when 737 Max started. A pilot on the recordings says, "We are on our plane, it is worth knowing."
The Boeing official replied that knowing about the system would not change the outcome of the accident. "In a million miles you are probably going to fly this plane, maybe once you are going to see it, anytime," he said, to know that he is not being recorded. "So we try not to get the crew overloaded with information that is unnecessary, so they really know the important information we have."
The system, which is called the Maneuvering Characteristics Augmentation System or MCAS, is designed to push the nose down to 737 Max, when it is known that it is too much during the flight. Investigators after the Lion Air Crash and Ethiopian Airlines crash of 737 Max believe that a faulty sensor was sending incorrect information to the MCAS system, forcing the aircraft to douse the nose, so that the pilot is not well Were able to.
The official also said that Boeing will fix MCAS system with a software update in the next weeks, but Ethiopian accidents took place and the aircraft was grounded before the update was deployed. According to the previous month, Boeing says it was ending test flights to check for updates and was constantly making progress on acquiring aircraft in the air.
In a statement, Captain Daniel F. Kerry, President of the APA said that Union will keep Boing pressurized for the answer. The statement said, "We favor our passengers and 346 people, who lost their life to prevent another tragedy." "Boeing did not treat the 737 Max 8 position as if it was an emergency."
Although the League initially said that it was convinced in 737 Max after the Ethiopian crash, the next day he said that it supported grounding. American Airlines has 24 of its 737 Max planes in its fleet, in which there is another 76 in the order.
Boeing is also investigating the alleged negligence at a plant in South Carolina, which makes a separate plane, the 787 Dreamerner.