Titanium fan disks, for example are all required to be inspected not just when installed but also at regular engine maintenance intervals. The inspection requires essentially complete disassembly of the fan (so it is required during particular engine maintenance events) followed by the application of penetrating dye and inspection at a narrow granularity.
This kind of maintenance and inspection actually can be required and performed, it just costs more time and money. If we want to be all market capitalism about this we could require tests necessary to ensure safety and let engineers, business people, and executives make decisions that price in the cost of dangerous and risky designs that require constant and invasive inspection and maintenance.
The only real difference with today would be regulators having a spine and/or more than pro forma power to enforce their decisions.
This kind of maintenance and inspection actually can be required and performed, it just costs more time and money. If we want to be all market capitalism about this we could require tests necessary to ensure safety and let engineers, business people, and executives make decisions that price in the cost of dangerous and risky designs that require constant and invasive inspection and maintenance.
The only real difference with today would be regulators having a spine and/or more than pro forma power to enforce their decisions.