In article ,
Ron Natalie wrote:

Emily wrote:
Travis Marlatte wrote:
How would they not know who to charge?

If it's a rental.

When we operated a rental (flying club) out of IAD,
it was part of the club billing to bill the landing
fee to the renter and pass that along to the airport.

There is a novel concept... charging based aircraft the landing fee in
addition to rent.
Most airports I am familiar with that charge a landing fee do not charge
based aircraft.