PPRuNe Forums - View Single Post - Boeing 737 Max Software Fixes Due to Lion Air Crash Delayed
Old 17th Apr 2019, 21:16
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Ian W
 
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The major problem that the 'train in the simulator' group will face is that the failure mode of the Lion Air and Ethiopia crashes no longer exists. If a single AOA vane fails it will not cause MCAS to operate. If MCAS operates it will be for a legitimate high AOA and it will only operate once not repeatedly. So there is no failure mode that can exist with the new software where MCAS will operate as it did before. I would imagine that 737 pilots would be able to cope with a single nose down trim when they are legitimately at high AOA as it will keep the stick back pressure linear. Once the aircraft returns to normal AOA everything is back to normal.

So everyone goes out and buys new simulators to find that there is no MCAS failure mode to simulate. Simulator salesmen will like it - the beancounters not so much - the regulators will be holding the stable door firmly shut despite there being no horse
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