Pilots trained on the MAX weren't given even minimal briefings on MCAS, according to an interview with Jon Weaks, president of the Southwest Airlines Pilots Association published in the Seattle Times early Tuesday. The system was supposed to help the crew keep from raising the nose too high, which can cause an aerodynamic stall in which the wings no longer provide lift. "When you're responsible for that aircraft and there are systems on there that you have not been made aware of, that's not right".
In a parallel move, the newspaper quoted an unnamed high-profile Boeing representative as saying that the company had made a decision to leave out some details about the new models of aircraft so as to not feed pilots with excessive information.
"This was clearly a sign that the safety culture [at Boeing] was missing on a cylinder or two", he said.
Lion Air's new Boeing 737 MAX 8 crashed into the Java Sea last month shortly after taking off from Jakarta's Soekarno-Hatta airport. They are working "closely with the investigating authorities and take all necessary efforts to understand all the interrelationships of the accident, finally".
"The bottom line here is the 737 Max is safe", Boeing Chief Executive Officer Dennis Muilenburg said Tuesday on Fox Business Network. "Safety remains our top priority and is a core value for everyone at Boeing".
Stalls are one of the most common causes of airplanes crashes. In the meantime airlines, pilots, regulators and jet manufacturers have been frantically reviewing flight protocols and systems to ensure passengers on other 737 MAX8 jets are not put at risk.
The crash is said to be a blow to the country's aviation safety record after the lifting of bans on its airlines by the European Union and US. The plane was carrying 189 people, including crew.
The deliveries data came a day after Bloomberg News reported that US pilot unions said they hadn't been notified or properly trained on a new safety system for the Max. In response, the Boeing 737 MAX flight controls will override the pilot and pull down the nose, even if the aircraft is being flown on manual mode and not on autopilot. "It will be soon". In the case of Lion Air flight 610, a sensor that measures which way the plane's nose is pointing apparently fed erroneous data into the system, something that could have sent the plane into a nose dive. Learmont argued that this is not a problem with the aircraft as such but a problem with a sensor system installed on other planes. "This is important systems information that pilots should know about".
The airspeed indicator is like a speedometer and tells the pilot how fast the plane is moving through the air.
Analysts caution against assigning blame before authorities complete their investigation.
Now the investigation's focus appears to be expanding to the clarity of USA -approved procedures to help pilots prevent the 737 MAX over-reacting to such a data loss, and methods for training them.