That beat up, poorly maintained C-172 with known but hidden defects has a current Maintenance Release. This makes it a legally flyable entity.
..ie airworthy. But is it ??
The Maint. regs dont specify, but there are TWO types of aircraft when discussing maintenance...for continuing "airworthiness"
Those WITH an current MR..ie deemed "airworthy" and flyable
Those WITHOUT an MR..ie not legally flyable, ie not airworthy.
In BOTH cases you will find the good, the bad and the downright dangerous.!
Very good question, Heff..!
rgds ;The Liar'