The crash of Partnair Flight 394 in 1989 resulted from the installation of counterfeit aircraft parts. Counterfeit bolts, attaching the vertical stabilizer of a Convair CV-580 to the fuselage, wore down excessively, allowing the tail to vibrate to the extent that it eventually broke off.
This happens to aircraft, and the only way to ensure it doesn't happen to rockets is to have extreme control of your supply chain.
Oh yes: https://en.wikipedia.org/wiki/Unapproved_aircraft_part
For example:
The crash of Partnair Flight 394 in 1989 resulted from the installation of counterfeit aircraft parts. Counterfeit bolts, attaching the vertical stabilizer of a Convair CV-580 to the fuselage, wore down excessively, allowing the tail to vibrate to the extent that it eventually broke off.
This happens to aircraft, and the only way to ensure it doesn't happen to rockets is to have extreme control of your supply chain.