It is my understanding that, after the loss of the Concorde, one of the resultant advisories mentioned an automated FOD detection system, which did not exist at the time. There are now multiple companies selling such systems, using radar and optical sensors, and the FAA has advisories related to same [1] (pdf link)
The best possible outcome from a fatal crash is regulation that will prevent similar accidents in the future. I don't think automatic FOD detection is mandatory (at least, I can't find any evidence of a mandate) - but I assume that it will eventually be mandated, as costs come down.
The best possible outcome from a fatal crash is regulation that will prevent similar accidents in the future. I don't think automatic FOD detection is mandatory (at least, I can't find any evidence of a mandate) - but I assume that it will eventually be mandated, as costs come down.
[1] https://www.faa.gov/documentLibrary/media/Advisory_Circular/...