......turn the wrench and ride the ride!
I too agree with this approach but it may be more of a quaint, symbolic gesture rather than an effective means of preventing maintenance errors. The guys turning the wrenches are human and make mistakes too (although perhaps not as many as pilots). Ridng along on the first flight is no guarantee of error free maintenance work. And, if one reads enough accident reports, it becomes evident that some maintenence errors do not manifest themselves in the first short flight or two.