Hello, some unescheduled flights drop off near an airport due to poor ADSB area coverage, and are not logged in the airports´s history file, you need to have prior knowledge of the aircrafts´ registration or flight plan totrack it.
For example this flight https://flightaware.com/live/flight/N764AV/history/20200402/1029Z/SKBO/L%20-16.51349%20-68.18372 dropped off near La Paz, El Alto airport.
A search option would be useful to track said flight such as appearing near or at landing alttitude said airports. Flightaware already keeps a log of these occurences but it´s not clickable/searchable/compilable to the user. It would be a good feature.