PPRuNe Forums - View Single Post - NYT: How Boeing’s Responsibility in a Deadly Crash ‘Got Buried’
Old 23rd Jan 2020, 14:00
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Originally Posted by RetiredBA/BY
Excuse my ignorance but isnt the MCAS switched off by the stab.trim cutout switches ?

Trimming by the handwheel.

Nothing macho ( or holier than thou etc.,) about flying a 737 manually, just basic flying skill, which should be possessed by EVERY pilot.
No point in going over it all again R Baby but briefly those switches don’t switch off MCAS - they switch off the Stab trim, which MCAS attempts to operate. MCAS can only be disabled by Slats out or and AP on.

My poorly made point was that disconnecting AP/AT and flying manually will not on it’s own get you out of this mess, as it would out of most others. Indeed, leaving the AP engaged would be beneficial in the special case of MCAS rogue operation. Problem is the Speed Disagree situation / Stall warning preventing this.

As recommended by Oldn’ see early threads for more on this and Trim wheel diameter problems.

Manual flying is of course not macho (some commentators are.) It is one of the most satisfying things to do and probably why we became pilots.
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