TIL The most expensive aircrash ever was caused when a B2 spirit was left outside in the rain. A sensor was damaged by water, causing a crash on takeoff at a cost of $1.4 billion.

Read more: https://en.wikipedia.org/wiki/2008_Andersen_Air_Force_Base_B-2_accident

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  1. Just for added clarity, which the wiki article doesn’t cite;

    The aircraft were parked at Guam and were scheduled for a 17 hour flight back to their home base in the US. In the US, a severe snowstorm cause the trip back to be delayed by a day.

    A decision was made to leave the aircraft on the tarmac overnight, whereas usually in the US or on other deployments, they are stored overnight in hangers.

    There was torrential rain on the night they were left outside which damaged a sensor through rain ingress, which gave faulty data to the flight computer and thus caused the immediate crash on takeoff.

    Crazy that a tiny bit of water can bring down one of the most expensive, technological advanced aircraft of our time.

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