RobertS975:
The safety record of Western air carriers is extraordinary... but the various players... the governments, manufacturers, carriers and crews really need to put much more emphasis on the accidents that didn't happen, but easily could have!
ASN Aircraft accident Boeing 767-2B7ER N654US Philadelphia, PA
and
ASN Aircraft accident Boeing 767-223ER N330AA Los Angeles International Airport, CA (LAX)
did not meet the formal definition of aircraft accident - but got NTSB's attention because of the obvious safety-of-flight implications.
In my career, I've seen many cases where the OEM put a lot of engineering effort into investigation of suspicious hardware - parts that had not broken, but which were "incipient failures". The public never hears about these, but owes its safety to this behind-the-scenes work.