How? I'm not particularly attached to it, but it seems to continue to be a commonly used expression and this is the first time I've seen someone raise an objection to its use.
Because the phrase and mindset leads to the wrong lessons and actions.
In aviation, there is little room for error. It’s also the case that resources and time are limited. So there are multiple constraints.
We both agree that Boeing is the big problem. I’d also say its a problem of the FAA and the aviation industry.
But UPS? Why would they be taking action “out of an abundance of caution”?
The worst you can say for UPS is they could have sought a second opinion out of “an abundance of caution”, and recommendations of next actions and how.
Keep in mind UPS core competency isn’t aerospace and aeronautical engineering.
Would they even be able to assess the risk of changing said bearings en masse?
The actual lesson here is that most of the advisories and self-certifying from Boeing over the past 30 years need to be reconsidered; most likely redone, by independent third parties and also an FAA with a mandate to be fully independent.
