Because you can’t cancel the second ones approach clearance 🙄This scenario happens pretty often. I'm curious why isn't it a good idea? You never had a guy execute a missed approach? How do you protect the missed approach segment when you have the second guy cleared? At what point are you not responsible for vertical separation and lateral separation? Maybe the guy landed and the field is socked in with horrible visability and he crashes. If you applied the rules in .65 you would be doing your job. The crashed guy never cancels you hold the second guy out. You call the fbo ask about him they know nothing. After 30 minutes you consider him a over do ac. You call center they get the sar going. Clearing a bunch of people to a uncontrolled airport with out getting cancellations is not doing your job. 4-8-1 F. Except when applying radar procedures,timed approaches, clear an aircraft for an approach to an airport when the proceeding aircraft has landed or canceled ifr flight plan.