3 ms·
> Boeing changing Max software to use two computers Does that mean we will find the MCAS in the 737 MAX 8 MMEL (Master Minimum Equipment List)? (Used to be her
by ypcx 7y ago
> Boeing changing Max software to use two computers
Does that mean we will find the MCAS in the 737 MAX 8 MMEL (Master Minimum Equipment List)?
(Used to be here but right now it's not loading: http://fsims.faa.gov/wdocs/mmel/b-737-8_rev%200.pdf http://fsims.faa.gov/wdocs/mmel/b-737-8_rev%200.pdf)
Isn't this the single biggest failure point of the whole affair? Adding a critical component which can bring the plane down (as it has happened twice) but not making it redundant?
One can perhaps argue (pardon the roughness of my analogy) that if pilots aren't trained to not open the door during the flight, and then do open the door during the flight, then it's a training issue.
But this analogy doesn't apply, because while the door is not motorized and cannot open by itself, the MCAS is a computer system which can fail (not just because of a faulty AoA sensor, but e.g. because of a chip failure or a software bug) and then actuate the trim into a dive where the pilots aren't able to fix the issue manually anymore due to high wind pressure.
- redis_mlc 7y agoHow the MMEL (FAA) and MEL (operator model-specific version) works is that anything NOT required for safe flight is listed in the MEL. Otherwise everything would have to be 100% working. So I would not expect MCAS to be listed in the MEL since it's required for safe flight. We'll see.
- ypcx 7y agoOh, I've gotten the MMEL definition wrong then (opposite). Thanks for clarifying!