"If the hospital falls into the APZ, they would never be allowed to expand." Whether there is or is not an APZ for the OLF, the hospital has already expanded significantly knowing fully well exactly where both the hospital and OLF are located. In any case, the hospital is not along the extended path of the runways at the OLF, so the hospital would not be situated in any such APZ. Moreoever, since OLF operations are sporadic, establishment of any such APZ is highly doubtful. Your line of reasoning is non-sequitur.