Thomas<p>I wouldn't want to be among the people who now need to explain why there is a single-point-of-failure for critical infrastructure. It might have looked like an acceptable risk at the time. After the fact it looks like a foolish decision.</p><p>I'd expect that other subsystems will be scrutinized as well. This looks like a higher level problem.</p><p><a href="https://mas.to/tags/heathrow" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>heathrow</span></a> <a href="https://mas.to/tags/SystemsSafety" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SystemsSafety</span></a> </p><p><a href="https://www.theguardian.com/uk-news/live/2025/mar/22/heathrow-airport-closure-fire-reopens-london-travel-flight-information-latest-news-updates" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">theguardian.com/uk-news/live/2</span><span class="invisible">025/mar/22/heathrow-airport-closure-fire-reopens-london-travel-flight-information-latest-news-updates</span></a></p>