[SystemSafety] "FAA chief '100% confident' of 737 MAX safety as flights to resume"
Olwen Morgan
olwen at phaedsys.com
Sun Nov 22 15:49:19 CET 2020
On 22/11/2020 13:55, Peter Bernard Ladkin wrote:
<snip>
>
> This has not changed. (It could be fixed aerodynamically by installing
> a slightly bigger HS, but that means more drag and thus higher fuel
> usage. ...
<snip>
Safety vs economics? ... Never heard that one before!
I'm not going to argue about the number of definitions of stability that
could fit on a pinhead.
If you've a choice between getting the physics right or fighting it with
your control system, you should, IMHO, go for fixing the physics every
time. It was, IMHO, a fundamental blunder for Boeing to adopt MCAS as
the solution to their 737 MAX attitude problems (whether those problems
were technical or cultural). Moreover, I suspect that, given Boeing's
current less-than-entirely-rosy financial position (search the website
of /The Economist/ for further details) the FAA is likely to have been
under pressure to accede to demands not to require solution of the
problem in the physics.
Put bluntly, I don't trust the current US institutional framework for
aviation safety.
Olwen
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