737 MAX problems not solved, warns former Boeing manager

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RESTRICTIONS: Broadcast: NO USE JAPAN, NO USE TAIWAN Digital: NO USE JAPAN, NO USE TAIWAN
A former senior manager at Boeing's 737 plant, Ed Pierson, has raised new concerns over the safety of the company's 737 Max planes.

Pierson says investigations into the airplane's safety issues focused on the MCAS system, while ignoring unsafe factory conditions that resulted in planes with faulty sensors, bad wiring, and other safety issues.


RUNDOWN SHOWS:
1. 737 Max pilots fight MCAS to raise nose of plane, but MCAS pushes nose down
2. Vertical split screen shows takeoff performance of old 737-100 vs 737 Max
3. Max model's nose rising too high, stalling, compare engine sizes and positions
4. Idealized function of MCAS, instructing horizontal stabilizer to lower, to lower nose
5. Error function of MCAS, receives error sensor input, lowers nose too much, crash
6. Continue crash sequence; show Boeing factory workers being pushed to rush work


VOICEOVER (in English):
BBC reports that a former senior manager at Boeing's 737 plant, Ed Pierson, has raised new concerns over the safety of the company's 737 Max planes.

Before Pierson spoke out, all attention was on the Max's MCAS system, which was designed to make the new Max models perform more like the older 737 models.

The Max models are longer, and use more powerful engines that are much bigger than before.

So, the idea was to save design costs by simply taking an old design and stretching it, and solving the oversized engine problem by simply putting the engine forward and higher, so it could clear the ground.

But the new engine position tended to push the plane's nose up, so Boeing came up with MCAS, which controls the horizontal stabilizers and pushes the plane's nose down automatically.

However, faulty sensor readings could too easily make the MCAS crash the plane, which is why the MCAS has now been fixed.

But Pierson's report says that authorities did not focus enough on factory conditions, which created planes with faulty sensors and other safety issues.


SOURCES: BBC, The Independent
https://www.bbc.com/news/business-55751150
https://www.independent.co.uk/travel/news-and-advice/boeing-737-max-crash-faults-b1792183.html
https://www.bbc.co.uk/news/world-africa-47553174
https://www.bbc.co.uk/news/business-47514289
https://edpierson.com/