Technofreak:
Correct, however with the checks and balances that standard aviation practices demand for the installation of such items it should never be possible for this type of thing to happen. One person will do the job and another will check/inspect it was done and and one or most likely both people will sign to say they have done their job.
That this happened shows an extreme level of non compliance.
Hence I said you are putting your faith in a lot of different people.



