<story><title>&apos;Passengers are afraid of this airplane&apos;: How Boeing is handling 737 Max problem</title><url>https://www.cbc.ca/news/business/the-national-737-max-boeing-1.5107529</url></story><parent_chain><item><author>Someone1234</author><text>Airbus aircraft require three AoA sensors because they&amp;#x27;re considered safety critical. On the 737 Max they weren&amp;#x27;t safety critical right up until they added MCAS, at which point that changed, and the regulators should have required it but failed to (in part because Boeing mislead regulators about how much MCAS could adjust the deflection in the horizontal stabilizer, doubling it after regulators had already sign off on it[0]).&lt;p&gt;The fact that Boeing is able to skate by with two and a software off-switch if they disagree, while Airbus continues to be required to have triple redundancy says a lot about their respective regulators (EASA Vs FAA). I&amp;#x27;m sure &amp;quot;cost&amp;quot; was discussed given the 350+ aircraft already produced and how impractical it is to add a third AoA sensor, but that&amp;#x27;s literally putting cost over safety.&lt;p&gt;[0] See &amp;quot;Inaccurate limit&amp;quot;: &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;www.seattletimes.com&amp;#x2F;business&amp;#x2F;boeing-aerospace&amp;#x2F;failed-certification-faa-missed-safety-issues-in-the-737-max-system-implicated-in-the-lion-air-crash&amp;#x2F;&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;www.seattletimes.com&amp;#x2F;business&amp;#x2F;boeing-aerospace&amp;#x2F;faile...&lt;/a&gt;</text></item><item><author>CydeWeys</author><text>That they didn&amp;#x27;t add a third AoA sensor does not fill me with confidence that they&amp;#x27;ve done all they can to fix this fatal issue that&amp;#x27;s already claimed over 300 lives. I&amp;#x27;m skeptical that a software-only fix is good enough.&lt;p&gt;Airbus planes, by contrast, have three AoA sensors. How can Boeing justify doing fewer given how critically important these sensors are for preventing crashes?</text></item><item><author>dingaling</author><text>&amp;quot;We&amp;#x27;ll do everything possible to earn and re-earn that trust and confidence&amp;quot;&lt;p&gt;Empty promises.  Will they fly 10 empty aircraft 24&amp;#x2F;7 for a year on realistic routes to demonstrate that they&amp;#x27;ve resolved the problem?  Will they integrate a third AoA sensor and retrofit it for no charge? Of course not.&lt;p&gt;They&amp;#x27;ll model the scenario and conclude that it is fixed.</text></item></parent_chain><comment><author>mhandley</author><text>It won&amp;#x27;t just be the FAA that signs off on the Max this time - the review process is to be a collaborative international one.  In part, this probably indicates how much the FAA&amp;#x27;s credibility has been damaged by the 737 Max:&lt;p&gt;&lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;af.reuters.com&amp;#x2F;article&amp;#x2F;worldNews&amp;#x2F;idAFKCN1RV1A1&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;af.reuters.com&amp;#x2F;article&amp;#x2F;worldNews&amp;#x2F;idAFKCN1RV1A1&lt;/a&gt;</text></comment>
<story><title>&apos;Passengers are afraid of this airplane&apos;: How Boeing is handling 737 Max problem</title><url>https://www.cbc.ca/news/business/the-national-737-max-boeing-1.5107529</url></story><parent_chain><item><author>Someone1234</author><text>Airbus aircraft require three AoA sensors because they&amp;#x27;re considered safety critical. On the 737 Max they weren&amp;#x27;t safety critical right up until they added MCAS, at which point that changed, and the regulators should have required it but failed to (in part because Boeing mislead regulators about how much MCAS could adjust the deflection in the horizontal stabilizer, doubling it after regulators had already sign off on it[0]).&lt;p&gt;The fact that Boeing is able to skate by with two and a software off-switch if they disagree, while Airbus continues to be required to have triple redundancy says a lot about their respective regulators (EASA Vs FAA). I&amp;#x27;m sure &amp;quot;cost&amp;quot; was discussed given the 350+ aircraft already produced and how impractical it is to add a third AoA sensor, but that&amp;#x27;s literally putting cost over safety.&lt;p&gt;[0] See &amp;quot;Inaccurate limit&amp;quot;: &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;www.seattletimes.com&amp;#x2F;business&amp;#x2F;boeing-aerospace&amp;#x2F;failed-certification-faa-missed-safety-issues-in-the-737-max-system-implicated-in-the-lion-air-crash&amp;#x2F;&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;www.seattletimes.com&amp;#x2F;business&amp;#x2F;boeing-aerospace&amp;#x2F;faile...&lt;/a&gt;</text></item><item><author>CydeWeys</author><text>That they didn&amp;#x27;t add a third AoA sensor does not fill me with confidence that they&amp;#x27;ve done all they can to fix this fatal issue that&amp;#x27;s already claimed over 300 lives. I&amp;#x27;m skeptical that a software-only fix is good enough.&lt;p&gt;Airbus planes, by contrast, have three AoA sensors. How can Boeing justify doing fewer given how critically important these sensors are for preventing crashes?</text></item><item><author>dingaling</author><text>&amp;quot;We&amp;#x27;ll do everything possible to earn and re-earn that trust and confidence&amp;quot;&lt;p&gt;Empty promises.  Will they fly 10 empty aircraft 24&amp;#x2F;7 for a year on realistic routes to demonstrate that they&amp;#x27;ve resolved the problem?  Will they integrate a third AoA sensor and retrofit it for no charge? Of course not.&lt;p&gt;They&amp;#x27;ll model the scenario and conclude that it is fixed.</text></item></parent_chain><comment><author>CaptainZapp</author><text>&lt;i&gt;but that&amp;#x27;s literally putting cost over safety.&lt;/i&gt;&lt;p&gt;Which seems to be fully in line with Boeing&amp;#x27;s business model and their behavior after the Lion Air crash.&lt;p&gt;Even after the Ethiopian crash they did just about everything to deflect, blame and obfuscate until this behavior was just no more maintainable based on the known facts.&lt;p&gt;Switching then to a &amp;quot;We apologise if your dead&amp;quot; marketing shtick.&lt;p&gt;I find it hard to believe, based on all the evidence, that this company put lifes before profit.</text></comment>